1. I wouldn't necessarily feel bad, but I think it's good that you're reflecting on this guilty feeling because you shouldn't teach your future son that that's ok
2.You're very privileged where you lived and lucked out during these times, because if you were in certain areas, your *** would've been raped or killed. There are some goony men out there who don't put up with that ****.
3. It seems like the bigger problem you suffer from is arrogance. You're the type of guy who thinks that just because your low level of self respect is amusing, that you can rip the respect from others as well.
4.You should try reflecting more on your past, maybe seeking why it is you thought all of that was acceptable in the first place (sounds like your parents neglected teaching you manners so I would start now)
5. Forgive yourself and just know that the behavior has passed, BUT the mentality of someone like you is still lingering in your sub consciousness of what you deem as appropriate and what isn't. This is important to resolve, because you will face public and social consequences in your future if you don't figure this out.