I've had my nose pierced for 3 years now. Always wanted to, finally did it. I am so glad I did. To answer some questions you might have:

Yes, it hurt, it was very painful for about 3 seconds, then done
I clean it EVERY day, even 3 years later, as it does collect "stuff" on the inside
You will learn an entirely new way to blow your nose

If you really want it done, I'd say go for it.