I like your thinking, I feel the same way
Really though, the one thing about a homosexual marriage that disturbs me is indeed the idea of a same sex couple raising a child. How do they teach the kid that homosexuality is uncommon, when they're raised in an environment where they have "Daddy 1, and Daddy 2"? Obviously they're going to know they're friends are different, because they have a Dad AND a Mom, and not two of the same. And with that all set in their minds, they likely aren't homosexual at all, but they might decide to hit on people of the same sex because they don't understand sexuality, and be marked by their peers as being *** (and that's if the kid isn't marked already for having same-sex parents).
I mean, say what you will, but we're a LONG way off from kids being taught from a very young age that boys who like boys and girls who like girls aren't necessarily freaks. Kids are cruel to each other, and that kind of acceptance is rare, if existent at all, in kids of that age-group today. Kids are normally taught that boys and girls go together, and that's all they need to be told in order for them to judge someone who behaves or thinks otherwise as a weirdo. And if the kid who thinks otherwise isn't really *** to begin with, then they're going to feel a number of unnecessary pressures, hardships and confusions until he/she is old enough to grasp such concepts.
I mean, maybe it's different now, but I'd never even HEARD of the concept of homosexuality until I was an early teenager.
There are numerous things to respond to. First, I don't think it's about what is "ideal."
Depending on what you think "common" means, homosexuality isn't common. The estimations vary, but the generally accepted value is that 10% of people are exclusively ***, and perhaps more than that have at least some slight leanings towards both, and then you have exclusively straight people. Because homosexuality was/(is, to a degree, and in certain places) taboo, those people who had leanings towards both would solidify their identity in a "straight-only" way of thinking.
But even 1 out of 10 isn't really that uncommon--look at the percentages of people with blue eyes, for instance. It's pretty small, especially worldwide.
It's true that people are ridiculed for being different. Nearly everyone, at some point, is the victim of prejudice or bullying. But I think as the taboos against homosexuality finally fade away--this at least, will be a non-issue.
It's gained incredible acceptance in the past two decades. Going from an "unspeakable" sin to the regular topic of TV shows, movie characters, etc. Mostly because of religion, people have a strong bias against them. People assume it's a fetish, abnormality, "choice," etc--but if you ask any *** person, they'll tell you they were born that way, always like that, etc.
Going back to the child thing--there are multiple ways to look at it. Want to look at statistics? I'm at work now, so I can't do immediate research, but I wrote about this several times during my sociology classes in college. Kids raised by two parents (straight or otherwise) are better off than those raised by one. And obviously, kids raised by one are better off than those in institutions/orphanages/homeless.
Statistics show that kids raised in *** families are:
1) No less better off than their raised-by-straight counterparts.
2) No more likely to "turn out" *** themselves.
3) Much better off than the millions of kids without homes.
There are many more kids than there are people willing to adopt them--straight OR ***. Adoptive parents are desperately needed, and there's no reason to discriminate against *** couples when the kids aren't any less better off.