It’s kind of a fashion trend, and internet porn made such a fashion trend possible by making it visible to more people. At least if you look at it that way, stark differences in behavior and opinion between generations seem completely normal.

That’s called being straight

I think most people use them interchangably, I call myself bi due to it being a more well-known term and the flag being prettier

In the same way you got deep dish pizza from italy

not to be that guy, but that’s selection bias

Why would you want to date a group of people that you´ve never found attractive? This is really confusing to me