You mean you have a "practice" version of California, where people who are identical to "our" Californians live without such laws, and you can provide detailed evidence comparing these two Californias? Let's go visit this practice California you apparently have and verify your data. /s/
I didn't think so. So we're back to your decision to interpret the data the way that serves your preference and reasonable people who disagree with you interpreting the data in a completely different way.
And that's okay. Not every gun owner has to "understand the need" for every gun restriction. Some of my family members are gun owners and they don't even try to understand. Some of those family members also don't understand why we have to pay taxes. ... or why we have to be fair to minorities and women. And some other of my family members don't understand why we would hold Israel to account for their actions, and why would consider any Arab to be friendly. Heck, I don't understand why we need to allow anyone to have simultaneously possession of more than one or two guns - I've never seen anyone successfully shoot three guns simultaneously.
It is okay for some people to not understand. It's the nature of bias to obstruct understanding.
Those are the types of restrictions that they're proposing. You apparently already have them in place in your state. (I know I have them in place in my state.)