I am straight. I have no interest in men whatsoever.
However, I do listen to the Savage Love podcast by sex advice columnist Dan Savage. Dan is gay.
He gets calls from all sexualities, and even just a few listens will clue you in that there is a WIDE range of sexuality out there.
It's not gay/straight. It's not gay/bi/straight.
It's a vast scope.
There's straight.
There's straight identified who go after one guy one time.
There's straight identified who are occasionally interested in d*#k so they hire transexuals - 99% of their clientelle are straight guys. Gay guys aren't interested in a woman with a penis.
There's straight identified who occasionally want to be on the receiving end.
There's bi identified who've only ever dated women.
There's bi identified who will only hook up with guys during three ways.
There's bi identified who split their time 50/50
There's gay identified who have a wife and kids.
There's gay identified who are occasionally interested in very manly women.
On and on and on...
Human sexuality is at best a gray scale.