Funny I've shot down every pro gun argument there is on this thread...
Only in your mind.
You are so out of touch with reality you're in danger of being put on ignore by anyone smart enough to stop arguing with you. You are a worse time waster than Twitter.
Sorry but I haven't heard a single good reason not to register guns and require background checks on all sales. Just a lot of pro criminal arguments.
The right of the people to keep and bear arms shall not be infringed. That's the single best reason to not register firearms.