Do you know any genuine bi men or is it always a stepping stone/compensation for not being fully gay?

There are genuine bisexual men. In my experience they tend to prefer sex with men but romantic relationships with women.

I have known many bisexual men.

As for your assumption.   To know if that was so I would need to know that person as a teenager and then know them through out their life to death to then be able to consider their sex life.  

I think if you were willing to come out as bisexual but were in fact Gay, why bother with the games. Your already going to have to deal with the bigots so just do it for being gay.

I don't understand what you could mean by a 'stepping stone' or 'compensation'.

Yes, I know several bisexual men (and women).  They are sexually attracted to some males as well as some females.  How is that hard to understand?