Do nail polish bottles ever run out?

That is the question. I mean I have thrown out plenty of bottles either because the nail polish had dried out or because the color is no longer acceptable to wear in public. But never have I ever opened the lid of my favorite nail polish and after dipping the brush in a few times said, “Gosh darn it!!! It’s empty.” 

Maybe this is a sign I should where more nail polish. That is all.