Although you're out by a factor of 2-ish since not all homosexuals are male. And then there's the fact that 2-5% is a Kinsey-style figure, so in fact includes bisexuals.

None of which invalidates your basic observation that it's a "Where do we draw the line" question... Still, if I wanted to touch on the politics as well as the stats I'd throw in socio-economic group as a factor and then there'd be something to argue over !