Let's put it this way, if you have it, and can... you are an idiot not to enjoy it. Most well-endowed men usually can and do, since the history of time, and ability. What is it other than oral masturbation? Think it may lead you into wanting to with another guy? Possibly. But if you're interested enough in your own, you'd be interested in another, as well. Just the way it is. Accept it. Doesn't mean you will, or you have to -- your choice. More str8 type guys than will admit to it, do. Not something one advertises, right?
Gay? From what I'm finding, there are a great number of well endowed str8 types, married, who want to play with other men on the side, and wouldn't ever get near the slightest connotation of being gay, than you can imagine.
Course to me, the way women are so unattractive these days and sloppy fat... can't blame guys for seeking equal partners any more. Especially guys who want to stay in shape.