my dad was adopted, and he has, umm issues..my theory is this...You are born with personality handed down from your biological parents..this is where nature takes place...As you grow with your parents you learn alot of things..how to cook, do math, etc..you also learn by watching your parents what you DON"T want to become...and can recognize those traits in yourself that aren't so great from mom and dad. I think that without that mirror of what youre like, you don't know that you don't want to be like them..right? does this make sense? I definitely harbor alot of the same issues as my dad, but sometimes when Im being an ass I can say (or my hubby says) "ok Jeff, stop being a butthole"