I wish that people kept losing their teeth throughout their life because I hate to think that I will never get to do the thing where you tie your tooth to a doorknob and slam the door to yank it out. 

If you’re that attached to having that experience I’m not really sure why not growing teeth anymore is stopping you. You can still do that, you’ll just lose a tooth forever. And then you wouldn’t have to keep wishing that people lost their teeth, because you would have one that was lost forever.