I'm the opposite. I kinda HATE boobs. I wasn't always that way, but then I saw some weird boobs once (they weren't even fully exposed), and I've been completely put off by 99% of them ever since.
I am not at all turned on by lesbian sex. Sometimes I do catch swoony ladyboners for certain lesbians (like Megan Rapinoe), but it's more of a romantic crush sort of thing with nothing stirring below the waist. I've had lesbian friends tell me that they love watching gay porn because the dynamic is so different, but for me it's never been the other way around.
Also, I don't much care for cis vaginas at all. Trans mens genitals on the other hand I'm totally cool with. After they've been on T for a while it looks entirely different to me, and suddenly I'm into it. It's like night and day.