It's pretty plain to me what it says. It doesn't take a theologian to interpret it. But how do you interpret it?
Do you have to add or subtract a word or two around "all men" or change men to "the elect"? Or do you accept it exactly as the holy spirit inspired Paul to write it, i.e, "all men"?
Whew! I'm not a theologian, so I guess my interpretation is as good as yours, huh, since it is pretty plain to me also.
Since the passage is talking about prayer, I interpret it to mean that I should pray for all men and not just one particular group. I am to include neighbors, coworkers, etc. in my prayers and not just my family, for instance.