The justification for Sex Education is that ignorance is more dangerous than knowledge. The same holds true for firearms. Far too many people are shot with "unloaded" guns. Ignorance of what guns are and how they work is more dangerous than people knowing what they are, what they can do, and how to safely handle them.
- Even if you believe that guns should be banned, the legal process for accomplishing this in the US would take decades. It's extremely difficult to alter our constitution, there's considerable opposition to changing it, and the political reality it that it is easier to leave the constitution the way it is than it is to change it. Consequently, even if you want to ban all guns, it still makes sense to teach kids to safely handle them as an interim solution.
- Teaching kids how to safely handle firearms will not help them shoot up a school. Someone who has never handled one before can figure out how to fire it within a few minutes, especially with movies, computer games, and Google as a guide. Firearms are designed to be as easy to use as possible. Using them destructively is extremely easy. Consequently, handling them safely is harder than using them destructively and requires training.
- You don't need to bring guns into schools to teach kids how to safely handle them for the same reason you don't need to have sex in the classroom to teach kids how to use a condom.
- For those who aren't from the US: To understand why the US is "obsessed" with guns, you have to understand US history. The US was founded by rebels who were rebelling against a tyrannical government and they wanted to retain the ability to rebel against their new government should it also become tyrannical. This is as true today as it was the day it was written. A reasonable argument can be made that the second amendment protects weapons which are necessary for overthrowing our own government, should it become tyrannical. It's a healthy thing for our politicians to be a little afraid of us.
- Requiring gun safety training, background checks, and licenses at the point of sale simply doesn't work. There are a plethora of ways that your child can encounter a gun without purchasing one. For example, I very vividly remember climbing into my parent's attic through the ceiling of an unfinished bathroom(which I'm certain they didn't think I could do) and showing my friends, without the knowledge of their parents, one of my dad's rifles for no other reason than because I thought it was really cool. No one died but someone easily could have. I had no fucking idea what I was doing. There is simply no way that any law or requirement at the point of sale can prevent scenarios like that from happening.
- Teaching kids to shoot guns isn't the point. The point is to teach kids how to avoid firing a gun by accident if they encounter one.
- Not everyone will own a gun and not everyone will encounter a gun during their life. However, the problem is that we don't know which kids will encounter guns and which won't. Therefore, the only way to teach gun safety to the kids who need it is to teach it to all of them.