Who said they'd follow them, it's just much harder for them to actually use a gun for their crimes.
Heres why gun control works, you can try to disagree with it, but you might not get far.
The difficulties relating to the purchase of guns if properly policed, if you've ever tried to buy a banned substance you'd know you can't just say "I'm going to buy some heroin" and then go out and do it in most cases.
The inability to perform a crime out of anger on the spot (takes all of 3 seconds to shoot someone, while it takes a LOT longer to choke someone to death) because you don't have a loaded gun in your home or workplace.
The people you'd have to deal with in order to get a gun would put some people off too.