you need firearms to keep your neighbors at bay? Man, I don't know where you live, but you need to move. Your neighborhood is dangerous! I've never lived in a neighborhood where I needed firearms to protect myself, and I've lived in some pretty sketchy places!
it can be a tool. I grew up hunting in rural New England and spent 12 years in the Navy. Been around guns my whole life. Here's the thing. No civilian needs a semi automatic firearm for anything. Best home protection if that's what you're looking for? 3 round pump shotgun. If you need more than a 3 round capacity for hunting, you are a bad shot and maybe too dangerous to own a firearm to begin with. The only thing an AR 15 or a handgun is goid for is shooting as many people as possible in as short a time as possible. Period.
I live in a not so good area of Long Beach, Ca. right now. Have for 30 years. I've lived in Chicago in the 80s. Been all over the world. Never had the need for a firearm. If you have needed to pull a firearm twice, man, I hope you intend to move from wherever it is you live! It's dangerous there!
I live in the US, where every crazy person has multiple firearms, and people wonder how I'll feel safe in Thailand. Think about that. Take as long as you need.