For the chance to expand your mind. If you've never done it before, you'll learn a ton doing it the first time. If its been a while since you've done it, you

For the chance to expand your mind. If you've never done it before, you'll learn a ton doing it the first time. If its been a while since you've done it, you may learn some new things in the processes given what you learned in the intervening years since the last time.