Drugs are Drugs. It's happened throughout history in all forms of music where artists fall to adiction. Heroine seemed to be the choice of beboppers because of the influence Parker and on the society of Jazz musicians at the time. It was not the only drug and I would venture to say Booze and SMoking was the demise of far more artists in jazz then Smack could have ever claimed. However, it is romantisized somewhat by Historians and writers that it was some epidemic in the jazz community.
You look at all the musicians that killed themselves through drugs. Some sort of emotional hole in their life probably feeling somewhat empty in some ways for sacrificing so much of themselves towards their arts that they try to fill emotional or spiritual holes that they did not develop in their youth when they were instead practicing or on tour or being told their whole life they were genious'. When you are on the road the temptations are all there... where do you go after a gig, up to the bar for a beer. 5 beers later someone offers you a joint.... why not... joints move onto other things if you are not careful of controlling yourself, and if you live on the road, it's a life of excess of access.
The music industry will always be in the shadow of the narcotics industry, it's part of the romantic aspect of the life style. Sex Drugs and Rock n Roll used to be Sex Drugs and Bebop. Nothing has changed really.