As with firearms and a lot of other things, banning an inanimate object only hurts the people who don't do stupid stuff with said object. I think it's better to ban doing stupid stuff with anything, and if someone can't observe those rules, then they aren't allowed to possess a firearm, laser, sharp objects, matches, or whatever. And once they go to jail, they probably won't be allowed to have a laser, anyway.
I don't know if pointing a laser at an aircraft is a federal offense in the U.S., but it should be. At least one moron in this country has "flashed" a police helicopter with a laser pointer, and gotten himself a visit from some of the aircrew's ground-based colleagues. Play stupid games, win stupid prizes.
Various states may have laws about directing a laser pointer at someone, partly because it could cause the other person to think they were being targeted with a laser-equipped firearm. In my state, pointing a laser at a law enforcement officer, or causing injury to anyone by means of a laser, will get you a fine of up to $2,000 and/or up to a year in jail. If it "causes a reasonable person to suffer intimidation or alarm" or even mere annoyance, the penalty can be a $1,000 fine, or up to six months in jail, or both. Upon conviction for such misuse, the defendant is probably going to end up forfeiting the laser, too.
But, as the saying goes, "You can't fix stupid." :shakehead