What does it mean when a pimple comes to a head? I have two that were red bumps, but now they're big and have come to a huge head! And no, I won't be popping them. That never works out for me.. Haha

Why do most people want their pimples to come to a head? I know some people like for them to come to a head just to pop them, but is there any other reason?

Thanks!