5-year-old shoots his 2-year-old sister

And these are the types of people who should not be having a gun if they have children. It constantly baffles me that people don't employ common sense measures to safeguard themselves and then insist that they need guns because strangers might come and shoot them, since they could endanger themselves a lot sooner by not managing their guns properly (See: Cleaning guns when not fully focused, kid-related gun accidents).

Then again there's lots of people who argue that they don't need safety belts because it's just a short trip and they're not getting into accidents. Sure, that works fine until you get into one, much like how leaving guns unattended is fine until an innocent life pays for it.

Exactly, most people I know where I live use guns responsibly, buy safes and closets to put their weapons in and lock them and do not let their children into them at any time. Even if the child owns the rifle of their own. (For hunting reasons of course is why the child would own it. But most people that hunt with kids they're 6/7 years old and start to hunt at that age. I did as well, just didn't enjoy it as much).