That's not common sense, it's a classic NRA talking point.Get outta here with that common sense. You won't fit in.
The better the gun market is regulated, the easier it'll be to track down weapons used in crimes, including those that are stolen from law-abiding gun owners. Again, it's insane to me that people still argue that just because criminals will break laws, we might as well not have them.
Also, I love how in anti-gun control advocates always divide the world into two groups: 1) upstanding, law-abiding citizens who responsibly use their 2nd Amendment rights, and 2) gangsters, thugs, and criminals who can't be trusted with guns.
Such bullshit.