Is it bad to be a 16 year old girl and have ten sexual partners in a 2 year period?

First of all the girl would be at high risk of contracting and spreading a sexually transmitted disease.

Secondly the social implications of being thought of as a whore or a tramp could be devastating.

Due to these two reasons alone I would consider it a very bad idea.

There are other implications like emotional maturity, development or problems thereof and these will in most cases just add to this being a bad idea.

Some people performing their life in this manner defend themselves by only living once and that they want to make the most out of it.

This is a terrible reason to use in order to defend ones actions as it is not only about them selves. It hurts many other people, especially if getting any diseases, and just proves immaturity and selfish behaviour.