Yeah I feel you. Ltrs/ marriage is like giving someone a key that if turned could destroy your life. It doesn’t mean they will use it but all of them have the option.
The vast majority of AKs in civilian hands in the US are semiautomatic and ar15s are as well. The automatic versions are very hard/expensive to obtain.
My roommate does. Fun shooter for sure. As far as rifles I just have a .22 and a bolt action mauser for hunting passed down from my grandfather. Just picked up a CZ SP01 that i can’t wait to shoot.