There are plenty of people whose lives have been ruined because of snorting and smoking dope. A lot of other countries besides the US have problems with that because they don't necessarily have access to syringes regularly. The withdrawals can be the same, it's the same substance, same path. I agree with redredthree. The stigma with the needle is people usually go from snorting or sniffing to shooting and their life falls apart, but most of the time their life fell apart when they started using in the first place. It honestly is an individual thing, depends on the person. People switch from one method to shooting because a) it takes less dope to achieve the same high or a better high which equals less money they have to spend at first and b) because it's a quicker, much better rush. I would attribute to one or the other, but it ends up being both. Sniffing 2 bags is nice but banging out 2 bags is better and the high you will get from sniffing 3-4 bags might be the high you get from 2 injected.