Nature or nurture?

I just wanna know why some straight people ume to know that being gay is a behavioral or somthing caused by the parent? I played with GI-Joes wanted to join the army, Liked guns, Got in tons of fights, was dirty as all hell and i knew i was gay since i was an infant when i was sat in front of a tv to watch the hunky news anchors... everyone thought my brother was gay, yes he is, but he was very flamboyant in his mannor and he always knew. now i can sit here and ume what a straight person can choose their uality all i want( I tend to think they have as much power as i do, girls just dont do anything for me... dont know why, just no stirring) but i cant tell them what it is like to be straight. They seem to think they know what its like to be gay and all the in's and out. Kinda like saying you know what it feels like to litterally lose your head, Kinda. They never tend to take our word for it. I take their word for them being able to choose. or thats what some have told. Cont...