@SeddyRocky:
First off, instead of writing what I thought some religion or another said about this topic, I sought out primary sources (i.e., words from the religions themselves.) I chose to begin with the Roman Catholic viewpoint because they have an easily searchable compendium of their stance on just about anything. I did NOT choose it because it is somehow THE source for all answers to religious questions. I tried to find other equally searchable databases for other major religions but it was a big FAIL. If you know of a source for Methodist, Islam, Judaism, etc., please share with the rest of us.
Second, if you ask whether something is a sin, and you agree that the question is a religious question, then you need to specify which religion you want to consult for the answer. You can't seriously think all religions will arrive at the same answer for every question. But if you don't want to use religion to answer a religious question, then this exercise is next to useless.
Though surely attraction may vary over ones lifetime (When I was 7, I had a huge crush on another boy, then a girl, then a boy... Though evento this day I'm not bisexual).
So, during this time of alternating attractions, would it be fair to call one heterosexual, homosexual, neither? That's the type of thing I'm referring to--it doesn't make sense to say your sexuality is a light switch either in one position or the other that can change by the week.
Choosing to experiment is one thing, but you can't choose wether or not to get a _____ for a girl or a boy.
Well, please explain, how exactly does one experiment without one?
You make an assumption here that I have to disagree with. I do not cosider homosexuality to be naughty (do adults actually use that word towards other adults?) bad OR evil. So I don't think that you have a point there. But of course, with that simple frame, you can never be wrong, because you can always label stuff as "victim, bad, naughty, evil, bad". Personally, I think that coming to accept who you are and love thyself (^^) is pretty cool, good and heroic. This of course, goes for all sexual orientations.
Your half missing the point. The mentality of victimhood is employed by those who attempt to rationalize why they are doing something they would otherwise consider wrong. They want to defend themselves somehow from being accused of doing something wrong by making the specious argument that "I couldn't help it, I was just born that way." In this case, the argument is that despite what the organized religion says is a sin, the person who does not agree will say "it can't be a sin because I was born that way." Unfortunately, the propensity to commit sin does not condemn the person, it is the person's actions alone that (when sinful) constitute the sin. Imagine a person is born a "natural born killer" and later kills someone. Are those murders not sins?