What are the benefits of crystal meth?

I’ve heard from some people that crystal meth can seriously mess up your system. But, in my observations, I’ve come to conclude that the pros far outweigh the cons. I mean, yeah. You can become horribly addicted. But that’s typically without supervision. My friends have told me they’ve discovered themselves with this ‘wonder drug’, but I’m apprehensive to make the investment. Opinions, please.