Tablet Pen's button broke

Maybe it was working on Art too hard, maybe it was overuse... But the button on my tablet pen is no longer being held inside it's hole. I'll have to get a rubber band to prevent it from popping out. And... worst part of all, it broke in the middle of class...

I never knew that button was so fragile... Are all Wacom Tablets like that?

And it's in for some heavy use over the next 2 years...

Update: It's now being held in place by rubber bands. But is it wise to just get a new pen?