if u think you need a gun because its dangerous out there, then there's the problem.
crime will always be, and guns will always be had.
just because you have a gun, so you can shoot it out or point it back at someone else doesnt mean you are safe.
its a non debate... countries with tough gun laws are safer. are they victimless?, no.. are there no guns?, of course not.
is there less crime?- yes. are there less deaths?, absolutely. are there less mass killings?, yep.
make it not so easy to get a deadly weapon and you reduce those with them...its not rocket science.