It's that once you are done (unless something terrible has happened), you are left with the same life that led you into this.
Why wouldn't you go back to it? It's just a vicious cycle.
I think it's a shame this thread has veered away from addressing this up here rather than subjective arguments over who's addiction is worse. Some posters have already noted that whether your DOC is heroin or meth there is always the problem articulated above.
OP, I have a different evaluation of kicking meth: I don't think it is easy, and I believe you should congratulate yourself for doing so. Yes, it does get somewhat easier when you've had a habit to deal w/ the comedowns, but psychologically it is hellish moving away from using the drug, especially after you've crashed. After the initial kick, at least for me, I felt a lot of anxiety when I went out to socialize. In addition, I felt a fuzziness and everything had an opaque quality for a time. Meth is not w/o its travails when you quit, physically, emotionally, and cognitively; this goes for the initial jump, and the staying abstinent.
You are going to need to come up w/ a concrete plan to augment your life in a way where using doesn't seem appealing. In your own way, find things which don't coincide w/ your using, things which are incompatible and compromised by meth use. Ideally, these things will serve not just as counterpoints and deterrents, but as building blocks toward lasting happiness and contentment. Try starting w/ and hobbies, goals, or pass times you have/had. If you have none currently, think back to before meth/substance abuse and survey the activities you enjoyed then. If still pressed for solutions, strive to induct people who don't use into your life and see what works for them. This will establish a healthy social life for you as well - which I find essential to my well-being.
Please everybody: it is not productive to get into a battle over who has it worse, or who's DOC is the most addictive. We're all individuals, and despite statistics and science, we all react differently to these things. Let's just try to stay supportive
