Am I Doing Something Wrong?

When I was a kid and I used to get in trouble and complain about my punishments, like any kid is apt to do, my mother would tell me that she was sorry, but if all of her children where happy with her at once then she wouldn't be doing her job right.

Fast forward to today...

I have 4 kids, one less than my mother, and I'm not going to waste my breath claiming that they are never in trouble, but some days reading through the daily posts on CafeMom, especially the Moms of Teens group, I get the impression that MY kids don't get in trouble enough and when they do it's never as serious as many of the posts that I see. But what really gets my worried is that my kids all seem so... HAPPY. I even had one of them tell me that their friends have asked her if we would be will to adopt them if something were to happen to their parents. Does this mean I am obliviously over-looking stuff that they should be in trouble for? Or have my husband and I actually found a way to keep them happy AND well- behaved? I mean they are all doing well in school, none of them have gotten in trouble with the law, neither of my girls is pregnant, neither of my boys has a pregnant girlfriend, we haven't had any major arguments around here in months, everyone does their chores with minimal nagging required and somehow our kids still seem to enjoy spending time with me and hubby, even our almost 16 yr old (Are't they supposed to start hating us once they hit puberty?).  As much as I would love to just take credit for being THAT AWESOME, there's a nagging voice in my head that keeps recalling what my mom used to say about how she wasn't doing her job if we were all happy and I worry that somehow I'm missing something...