Okay, first of all i'm NOT a perv or anything, just curious. Please help me answer these questions....

1) Why do people masturbate?
2) Is it important?
3) Do you have to?
4) What's the point of it?
5) Is it like having sex but without another person?

thanks (:

P.S. PLEASE DON'T BE LIKE 'GO ASK YOUR PARENTS' BECAUSE I'M NOT!