I think the issue is actually harder to explain when homosexuality is seen as wrong. I mean, if any two given people are allowed to be married, then you just explain it as something that two people do when they love each other very much. If same sex couples aren't allowed to marry normally, then you have to get into the why of the issue, which eventually would boil down to some people not being okay with what same sex couples do with each other in bed.
Yes, unfortunately that's a truth. I'm from the Netherlands and here it's kind of weird if someone is against it anyway, so I don't encounter the issue very often.
I was half-kidding with my above remark, but thinking about it; I could not live in a country where that would be the case. I would think that even if big parts of a country work like that, in 'well educated' parts of the country, your kids would've seen some amount (edited) of gay people together already which means there is nothing to explain (it being already natural). If that would not be the case, it means there is some kind of suppressing force at hand which I would not be able to live with (I'm not gay, but i'm very much against the ignorance which disallows / restricts people while there is no solid or even non-shaky argument against it).
Also, it is not known what population of a country is in fact gay. I read somewhere between 2 and 15% depending on a lot of factors. The issue is ofcourse that in most countries most gays did not (and maybe will never) come out, so it's hard to analyze anything based on that. But if 2%, it's still 2 out of 100, so in your neighborhood there will be always a few around and they ofcourse find partners from all over.
TV has probably a very big effect of what people accept as normal, probably more than neighborhoods. For better and for worse, people - including kids - watch hours of the stuff each day.
Fortunately, I was not encumbered by any feelings of "wrongness" or "immorality" or any fear that my kids would "catch it." That's why it totally turned out to be a non-issue. In fact the kids probably ended up explaining it to each other, in the very few cases where it occurred that somebody in a class had same-sex parents.
