Male plants are generally considered bad and are usually thrown out. The reason is that they contain very low levels of THC, not enough to get you high. But they also pollinate females if left with them. They will do this if left with them, no matter what. And if the females get pollinated, they will produce seeds. You'll get seedy bud (if you're selling, this is bad, because seedy bud is generally considered bad, since the THC levels are lower).
Some people want seeds, and if you're okay with seedy weed (it's still smokeable and will get you high, still decent weed, but not as good as unpollinated bud), keep them. But if you have no need for seeds, remove the males and get rid of them. Just cut them up and put them in bags (use a lot of bags and spray some strong smelling stuff in there, because that stuff is going to reak, and somebody could find it, giving you away).
You can smoke the leaves if you want, but many people who have done this have reported that they did not get high. You can keep a few of the leaves just for the keepsake (I don't know, I'd like to get a whole weed leaf and just save it in some plastic). You can use it to make some cool weed designs, if you're into that. Or maybe a good, trustworthy friend wants it (you could possibly use them for rolling papers).