My parents argued badly, as well. Sometimes, not always, you can learn from watching someone do something badly. I like to think I didn't (and don't) make the same mistakes my parents made.

Also, this sort of stuff is exactly why I am absolutely terrified of having kids.

I'm not sure how old you are, but I had the same feeling when I was in my 20's. I gradually lost it, because I realized over time that kids are pretty resilient and it's not that hard to do the right thing. I don't regret it at all.