What is more legitimate is the idea of legislating not in order to enforce religious morality on people but to facilitate the operation of society, without infringing upon individual rights where possible. Homosexuality is in no way socially dangerous, unhealthy or destructive and anyone that argues otherwise is making shit up.
Two things.
1) How do homosexual unions at all contribute to the facilitation of society?
We all know heterosexual unions are important, becuase well without them, there wouldn't be a society. Why bother regulating that which isn't important or relavent (i.e. civil marriage for gays)?
2) Where do your rights come from?
You're a disgusting human being in every way.
Under moral relativism, his views hold exaclty as much legitimacy as yours. To him, you're probably a sick and twisted individual yourself.
I am pretty sure that all sins are equal in christian mindset yes? Therefore if homosexual sex is a sin then it would be the same as stealing some gum from a 7/11 or adultery or even just coveting what someone else has... so you Name_taken are as big a sinner and as morallly wrong as any gay man or woman therefore you can't judge them. Something to the effect of only "he who is pure may cast the first stone" (probably horribly mangled that but the meaning remains the same)
Who said I'm judgeing gay people?
Telling sinners that they are sinning is not judging. If someone was to tell me, that say, swearing at my parents when I do is a sin, they would be in the right. I wouldn't have anything against you condemning my actions as sinful, and urging me to repent, if you were to notice me doing something I shouldn't be. If anything you are doing me a favour for which I should be grateful.
Compare someone ackowledging they have sinned, i.e. stealing a chocolate bar from 7/11 with your average homosexual. Most gays see nothing wrong with homosexuality (funnily enough) and go as far to condemn Christians as evil people etc. for telling them the error of their ways. Most gays not only sin, but take pride in their sin, and glorify it, and expecting others to encourage them to continue doing so.