the idea of what is good and what is right is based on moral consideration based on liberal ethic (what is done with adult consensus is good other is wrong) not on utilitaristic ethic (what is desired and usefull is good and what is good could be let done if desired even if there is a lack of maturity to judge if what they desire is good or not per se)

Many liberals don't want adults to do plenty of things. For the most liberals, I suspect all moral decision of emotional based. And allowing people freedom to do what they want will often lead to a high level of good resulting, even if its not predicted. After all, how are some bureaucrats going to be know what I want. Not to mention the waste that could have gone to better uses.


so while homosexuality? I don't see any evolutionary utility until proven otherwise

Proof does not exist ever. But there is evidence of evolutionary benefits from homosexuality: http://www.theguardian.com/uk/2004/oct/13/highereducation.research

Still, evolutionary utility is somewhat irrelevant when it comes to ethics.

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Anyways, I don't hate them. They're wrongly discriminated against as well. And its not like their opinions are different than the mainstream. At least they are getting out the ideas that sexuality are immutable, who you love doesn't make you a bad person, etc that can be used to argue for acceptance of pedophiles.