Good questions here and lots of good answers, mostly true.
Tanks can be privately owned in Great Britain, too, though not machine guns. There are lots of things I'd like to have, even to include a few firearms, that I cannot afford. Some things are illegal and some are simply unavailable (except on eBay). But as far as firearms go, I could do without any. I own only two now and mostly I "do" without them. I'm much too old to fulfill the purpose of the 2nd Amendment. So mostly there's no point.
The argument that criminals get whatever they want, therefore commodity X should not be illegal doesn't hold much water. I agree that there are too many things illegal (prisons are a growth industry) but having nothing illegal is not going to happen. You may not like the "guv-mint" but I'm sure I will like yours even less.
Shoot low, sheriff. They're riding Shetlands!
Underneath the starry flag, civilize 'em with a Krag,
and return us to our own beloved homes!
Buy War Bonds.