The DARE program told me that definitely 100% of illegal drug users eventually turn to murder to acquire more, but that might have been an exaggeration.
Someone rips you off in the drug industry you and your buddies go beat them up and take their stuff of value. Someone rips you off in above the table business you sue them.
Heroin withdrawals are quite painful (literally), and many users are also simply suffering from endogenous depression that responds to almost nothing, and in fact used to be treated by morphine.
Same goes for alcohol and benzo withdrawals that WILL give you seizures and quite possibly death.
Psychostimulants (cocaine, amphetamines, cathionines, other assorted alkaloids, including caffeine) withdrawals means being very tired, lethargic and sleeping a lot, they are not life threatening.
If you were seriously addicted but not high at the time, I expect you might feel agitated, but also kind of sorry for yourself / miserable and not so much in a murdering frame of mind.
Large amounts of money (which large amounts of cocaine can be exchanged for), on the other hand...