Questions to bisexual men from a gay man.

This question is really just from my own experiences. I tend to fall for bisexual men, especially since they tend to be more "masc." It seems. They openly call themselves bisexual and some even find me attractive, but find it very uncomfortable to not just be in a relationship with a guy, but even just having sex with a guy. Do you guys feel it's easier to be with a woman,cause it's what you're used too? Does it make you uncomfortable to have sex with men, or have you never tried it? Gay men I also want to know your experiences with Bisexual men. Do you feel like it's impossible to compete with girls? Do you feel worthless if they go towards women?