This is one of those rare fandoms where I'm shipping more than one or two pairings, most of which feature Tony, which doesn't surprise me at all.

Tony would make Bruce so happy. Well, maybe not normal people, since he has those anger management issues, but definitely not totally miserable all the time.

Don't feel guilty. I thoroughly enjoy the Pepper/Tony on-screen, even if I then ship him with everybody else in fandom. About Bruce/Tony, that is true. I fangirl over them both ways, but they would make such a beautiful couple. But there's fic around, so we're definitely not alone.