Of course I worry too much. From the minute I laid eyes on my new babies, just a couple minutes after they were born I was attached to them. I wouldn't want any offspring to have issues, because I'd have a hard time dealing with it, and if I'm upset over that... I start getting depressed, and I wouldn't be taking that great of care of my snakes due to the lethargy.
I don't plan on inbreeding, though, if I could help it. The only way it'd happen is if I accidentaly left someone in the tank for too long while cleaning the other tanks.