I'd much prefer you arm yourself if you are genuinely worried about crazy people. It's precisely why I never leave the house without arming myself. The world is full of crazy people and those people don't follow laws.
It may surprise you to find that lawful gun owners are some of the most law-abiding citizens out there. CCW permit holders, for instance, are 37 times more law-abiding than the population, as a whole, and they're roughly 9 times more law-abiding than our own police officers.
So, no... your irrational fear of people with guns will not keep me from defending myself. The 2nd amendment doesn't give us the right to bear arms... it ensures that the natural right to bear arms is not infringed upon.