"This isnt about you clearing a building as a one man army Haha! This is about your personal protection, and the protection of your family"
Right ...
That's why they have semi automatic assault rifles that can fire 60 rounds per minute.
Because as we all know, a minimum of 60 bullets sprayed all over the room is necessary to stop a burglar.
-B-
Well if shit ever hits the fan, which I believe it will sooner than later, you are going to need the firepower. Also, criminals don't care about the law, so whats to say he doesn't have a lot more ammo than you do, or perhaps there is more than one. Criminals are arming themselves to the max while law abiding citizens are supposed to have access to very little comparatively. This is especially true in Canada.