What is the main message in the motion picture, Trainspotting?

The main characters in Trainspotting are totally immersed in Edinburgh's drug culture; however, taken as a whole, the film sends an anti-drug message. According to some critics, portraying drugs in a fantastical, cinematic way might make people want to try them. Even if there is any truth to this, the film's plot and characterization clearly communicate that freeing oneself from drug use should be the utmost priority in an addict's life.