Get a kid something like a Specialized P3 or a Fisher Mullet and you have a bike that will survive the wrecks your kids don't.
I am sure you didn't mean it to hurt anyone, but as the mom of a 7yo who got a bike for Christmas, I really cringed at that wording.
Oh man. It's really late. I was just trying to say that the bike would be tougher than the kids. I didn't realize that I'd inadvertantly killed the kid in my scenerio. I'm sorry.