I almost always answer the phone, as I'm home doing many mundane chores that I wouldn't mind being interrupted or multi-tasked at the very least!
I won't answer during dinner or when socializing/hosting other people at my home.
I don't like call waiting, because I think it's rude to leave one person hanging to talk to the possibly "more important" person. I want to be respectful of who I'm talking to at the moment, unless it's a solicitor or something like that.
I'm also one of those people who leaves long, rambling messages that I hope are entertaining to the listener!
My type is a scary-social ENFP, of course!