Mine always stays intact. Until i let literally anyone borrow it. The worst is when you get it back and instead of being totally snapped off, it’s just bent up to a 90⁰ angle, and then you have to snap it off yourself because you can never get it to lie flat again after that. That’s why I would always keep a spare with the clip already fucked up in my bag when someone inevitably asked to borrow a pencil.

My mom only had the lower two wisdom teeth, none on top.

It does sound kinda crazy, but you will use it for like 1/3 of every day. I can see a similar argument being appropriate as for buying high quality shoes.