Hi Jim,
You may be envious to child-free people, but, however, I think you still have more positive than negative with your kids. You seem to be such a great father for them. See, if my animals make a mess in the living room (I used to have a dog who would intentionally poop on beds! ), or chew something up, or wake me up at 3 am, it is annoying. But I still would rather have animals than don't have them. It is probably similar thing here. I just appreciate freedom too much for being a parent.
Sorry, the stealing thing, especially with cars, are always drive me crazy and mad...
I just hope you guys will find a right solution for this priblem. Good luck.