>> Girls like nice colors etc from the earliest ages - before any culture can play any part.

Are you basing that on research or personal experience? From what I gather we like to give babies that are female different stuff than males, so pretty much right of the away babies are being influenced culturally. Or has there been a controlled test done that I'm unaware of?

>> Is being gay a 'cultural difference'?

Is it with any certainty possible to answer that question, as far as I know, we have no idea. Or have I missed something?

I'm sorry if it seems like I'm nitpicking, I'm genuinely curious.