When organisms mate too closely within family lines, they tend to make it more likely that abnormal, recessive genes will be passed on to their offspring. This means that their children are more likely to be born deformed or with other genetic related problems. The longer the inbreading goes, the more generations that are invovled, the worse the problem will get.

Would you not find it weird sleeping with your brother/ sister/ aunt/ uncle/ nan/ grandad/ father or mother? Seriously, I don't think you can get sicker than your mum, you came out of there! You are brought up to love each other like a family, not to sleep with each other too.

God laid out the laws against it very clearly in the Bible. He designed us and he knows what is best for us. I don't question God on this one.

Hell, long as it is completly and tottaly consensual, made up by parties who are in their right mind, and there is no chance of a pregancy, I don't see the problem.

Incest is wrong, for several reasons, mostly psychological. I want to direct this message to Riff-Raff. it is too long to enter as a comment. Riff-Raff says that we must condemn incest because it is in the Bible. Well, read this letter to Dr. Laura and you will find some weird things written in the Bible that we just can't follow: On her radio show recently, Dr Laura Schlesinger said that, as an observant Orthodox Jew, homosexuality is an abomination according to (Leviticus18:22), and cannot be condoned under any circumstance. The following response is an open letter to Dr. Laura, penned by a US resident, which was posted on the Internet. It's funny, as well as informative: Dear Dr. Laura: Thank you for doing so much to educate people regarding God's Law. I have learned a great deal from your show, and try to share that knowledge with as many people as I can. When someone tries to defend the homosexual lifestyle, for example, I simply remind them that (Leviticus 18:22) clearly states it to be an abomination. .... End of debate. I do need some advice from you, however, regarding some other elements of God's Law and how to follow them. 1. When I burn a bull on the altar as a sacrifice, I know it creates a pleasing odor for the Lord (Lev.1:9). The problem is my neighbours. They claim the odor is not pleasing to them. Should I smite them? 2. I would like to sell my daughter into slavery, as sanctioned in (Exodus 21:7). In this day and age, what do you think would be a fair price for her? 3. I know that I am allowed no contact with a woman while she is in her period of menstrual uncleanliness (Lev.15: 19-24). The problem is how do I tell? I have tried asking, but most women take offence. 4. (Lev. 25:44) states that I may indeed possess slaves, both male and female, provided they are purchased from neighboring nations. A friend of mine claims that this applies to Mexicans, but not Canadians. Can you clarify? Why can't I own Canadians? 5. I have a neighbor who insists on working on the Sabbath. (Exodus 35:2). The passage clearly states he should be put to death. Am I morally obligated to kill him myself? 6. A friend of mine feels that even though eating shellfish is an abomination (Lev. 11:10), it is a lesser abomination than homosexuality.I don't agree. Can you settle this? Are there 'degrees' of abomination? 7. (Lev. 21:20) states that I may not approach the altar of God if I have a defect in my sight. I have to admit that I wear reading glasses. Does my vision have to be 20/20, or is there some wiggle room here? 8. Most of my male friends get their hair trimmed, including the hair around their temples, even though this is expressly forbidden by (Lev.19:27). How should they die? 9. I know from (Lev. 11:6-8) that touching the skin of a dead pig makes me unclean, but may I still play football if I wear gloves? ( footballs are made of pigskin) 10. My uncle has a farm. He violates (Lev. 19:19) by planting two different crops in the same field, as does his wife by wearing garments made of two different kinds of thread (cotton/polyester blend). He also tends to curse and blaspheme a lot. Is it really necessary that we go to all the trouble of getting the whole town together to stone them? - (Lev.24:10-16). Couldn't we just burn them to death at a private family affair like we do with people who sleep with their in-laws? (Lev. 20:14)

The problem isn't in the act itself, (though we have found that there is a small increase in the chance of a birth defect in children born from incest) The problem is in the relationship between siblings, mother and son, father in daughter, or any other family relationship. More often than not someone in the relationship has power over the other. This leads to the question of, can both partners really give consent? The problem also is, the society looks down upon incestial relationships, often causing mental breakdowns in the partners, and if there is a child born of the incest, this is even worse, the child is often treated differently, and doesn't realize why mummy and daddy cant go out together and act like a proper pair of parents. there are many more reasons, but I think that captures the gist of it. Oh, and to the person claiming "god says its wrong so it must be", god also said kill all non believers...You coming after me?

If you mate with one of your relatives and you get pregnant your more likely to have a baby with birth defects..Anyways it is just wrong..Family is family and you should never think of them in THAT light.

Morality.

Appearantly, when cousins get together, legally, it's ok. My sister's EX- boyfriend, just basically left her for his 1st cousin. So, my sister did research on it, you wouldn't believe how uncommon it is for family to be together. I don't know what has happened in our society, I guess through the evolution of Jerry Springer, all things are now possible. Such a crazy world!! :)

There is nothing wrong with it as long as its consensual. its extremely exciting and mindblowing sex for sure. Its no worse than many other forms of sex thats accepted these days so why no enjoy it!!!

I don't want to take a moral stance on this, since I don't think I even have one, but incest and inbreeding is, for once, unnatural. Well, sorta....it's not good for a species, is what I mean. It can cause birth defects and can make a species susceptible to disease. For example, a lot of the problems that the cheetah faces are the cause of inbreeding.

Incest is wrong!... but we have loads of materials in net videos and real stories sites such as http://youtube or http://aboutincest.com

Let's start with "everything" and break it down from there.

a lot, you can make a baby suffer for life if she gets pregnant