The biggest issue in my recent decision to purchase my foster son a used, but excellent condition Redline MBX, was his ability to take care of it. When he came to live with us, he had this huge, heavy mtn-style bike that he couldn't manage. He couldn't park it properly in the garage, or work on it to change a tire or whatnot. So, for his birthday, I got him the other bike and he's had nearly as much fun working on it as riding it. While he still needs help getting a new tire on, he can do everything else himself. Big and needed confidence boost for him.
/s