Hah. Clearly you've never held a firearm before, Chimeros. At the ripe old age of nine it took me all of ten seconds to learn how to load, cock, and flick the safety off a gun. Maybe a couple hours to learn to squeeze the trigger rather than yank. Maybe a few days to nail coke cans from a fair distance with a .22 rifle. Granted I had a good teacher, my grandfather. But even alone it wouldn't take months or years to familiarize yourself with firearms. A few visits to the local firing range. Maybe a class or two. See, that's the beauty of guns and crossbows. They don't require years of training. That's one of the reasons they replaced bows way back when. Hell, the first time my grandmother ever held a gun she was plinking tin cans like a pro.
Sure, bombs are bad. Relatively easy to make, too. Uhhh. So? Let's adopt policies to protect ourselves from both. It sure beats just giving up and letting people use whatever they want to slaughter us.