Please note that I said "Protestant churches I've attended." I've never attended an apostate church (ie, one that accepts the homosexual "lifestyle" or that didn't accept the inerrancy of Scripture). I could be snarky and say that you can't really consider those other organizations as "churches" anymore, because, well, they're just overgrown social clubs.
I knew someone was going to immediately post all the Protestant churches that accept gays, but as far as I'm concerned, those "churches" are no longer Christian. As I said before, they're just vaguely religious social clubs.
I'm an old-school, 5-point Calvinist -- but theologically, I have more in common with the Roman Catholic Church or the Orthodox Church than I do with the Presbyterian Church (USA). At least the conservative Protestant denominations, the RCC, and the Orthodox are generally holding the line in matters of morality.
I personally don’t consider them Christian anymore. They are no different than the Unitarians.