Which is a tragedy, of course. There is nothing to be afraid of.
Many gay men have already discovered this because unless they suppress it, they have to embrace it. And once you embrace something like that, you begin to understand it. Gays have the advantage that they can talk to other gay men in a sexual context about their sexuality. This is much harder for a straight man because it's not another man he wants to be intimate with but it's another man who he needs to hear advice from.
So it takes special circumstances for straight men to embrace their sexuality without fear or threat. Once they do, then they know how to easily distinguish between physical contact and physical intimacy. And then they can enjoy all the benefits of physical contact.
This is one more of those skills we've forgotten that we need to teach boys as they become men. I'll stop preaching now... :-)
Wade.