Is Mise, incest is still a criminal offense, and homosexuality is not, so your really off responses are not an issue.
How do you feel about all those Catholics in Ireland agreeing to gay marriage?
Doesn't it just warm your heart?

Suse,

Incest is indeed a crime and it is a crime if it is homosexual or heterosexual, don't you find that strange?

Given that this is the case then then in respect to homosexual people the law is ridiculous, as it is in respect to heterosexual people who cannot procreate.
Why should not a woman who has had a hysterectomy be allowed to have sex with her near relatives, likewise a man who has had a vasectomy?

Surely you can't be that naive Is Mise?

You don't think the possibility of having genetic problems in any children they may have is the only problem with having sex with a close relative?
The mental health institutions and psychiatrists rooms are well used by people who have had sex with close relatives.
These two issues by themselves are enough to lead to continuing laws against this practice, regardless of the age of the people.

Wikipedia says it better than I do:
"...incest is wrong because it introduces the possibility of irreparably damaging family units by introducing a "notoriously incendiary dynamic- sexual tension- into the mix"
(Saletan, William (2010) "Incest is Cancer")"

Most of the things we do are wrong - but that doesn't mean that the state has a moral right to forcibly prevent us from making mistakes: the use of the coercive threat of the law is by far more wrong than consensual incest for example.

Nothing however prevents the state from saying: "look, if you have incest, then we will not pay for your resulting psychiatric treatment and if defective children are born as a result, then we won't pay for their healthcare either". That would be perfectly fine and fair.

Yuyutsu, luckily 'the state' doesn't agree with you.
How dreadful that you would push your anti-state barrow to include willingly allowing the birth of children with lifelong often painful disabilities and/or early deaths.
These kids don't have a comfortable life, so what you suggest is akin to sadism.

Dear Suse,

Who mentioned "allowing"?

Ceasing to violently interfere with others does not amount to "allowing" them anything. You are still welcome to disapprove of what others are doing and you have every right to not befriend those who do things which you do not like - but you have no right to act violently against them so long as you (including your family and your own people) are not threatened by them.

The "state" is no more than a bunch, or a gang of people who assert themselves over others using force without their consent, in other words, who never ever agreed to have anything to do with them. The closest equivalent to that is rape.