I used to be addicted to heroin. I started at like 15, i only smoked weed before that, and i stopped at 19. I know that isnt realy a long amount of time, i still take e and other things, but i wouldnt go near heroin again. Heroin crack and meth are bastards to contro,l i Know people who are addicted to all of them, so i disagree with hellmandude it isnt simple to control atall. I used heroin a couple of times, then i noticed i was using iy more and more then i noticed i was using it everyday, some synthetics are crap i.e crack, meth and heroin but there are also some that are ok i.e e, mdma and acid.