amphetamines effect different people in different ways. So its hard to answer that. I mysef use street amps,have used dex in the past but not quite the same as glass.
The weekend warrior becoming addicted,or dependant on there DOC is typical of most addictions. Some drugs will creep up on you,whereas others will grab you by the nuts nad you see it coming,feel it happening,but few can stop it.
Your at the see it coming stage. And the worst place for it quote refered to the drug scene in vegas.the opportunity and availabilty often encourages abuse.
My meth addiction started as weekend benders,non stop fri night to sunday late...but eventually i would use monday mornings in order to not miss work,then tuesday and then wednesday,and the rest is history...
Trouble with amps is you can work and function,usually better than normal so that would justify my use..
Act sooner than later mate.... Gavatron- from my prison island,hidden in the sun for a million years.