Unless you live in Tennessee or Afghanistan, local culture doesn't tend to oppress homosexuality. In fact, one could say it embraces it or even favors it, with the popular trend now being for all men to shed their manliness in exchange for skinny jeans and swooped hair.
I urge my fellow men to join me and sport your five o'clock shadows and ass scratching. We're here, we're straight, get used to it!
I'll try to make this short and concise without patronizing you. If I fail at the latter, then you have my apologies.
I understand your thought process here; it's one shaped by popular culture, especially the "Sitcom Ideology" of today. It's tempting when in the majority to overlook the problems of the minority, and to think that society over all has escaped the prejudices of yesterday. It's a pattern I've fallen into many times, and I've found that, with a little perspective, there's more antipathy out there than I cared to acknowledge.
I mentioned the "Sitcom Ideology" briefly, and a proper example of that would be the TV show
Will and Grace. It often glorified the life of a homosexual(a flaming one at that) as the cocktail party, and flamboyant one that many Americans see today. It didn't, however, show any of the demeaning treatment that homosexuals often receive(aside from when the titular character went into a Red State, which, in the mind of the show's very liberal producer, automatically meant that ignorance and bigotry abounded).
As I have been in the past, I'm hesitant to use the word "oppression" in this context, but if there's anything that the Prop 8 snafu showed, it's that the struggle for homosexuals to gain equal rights is still a bitterly fought battle.