Look at his life - seems like he had trouble after trouble after trouble....  Dug addiction, divorce, lawsuits ect....  Really hurt a lot of people in his life and while he seemed to have a lot of adventure and get lots of attention....  I would say he is a good example of who not to be like.

Usually best to follow teachers who seem like their practice worked for them.  Crowleys practice seemed to mostly bring him trouble.