Crack is the freebase form of cocaine that is processed into smokeable form. Crack has become very popular in the U.S. because of two factors. The first is that since crack is smoked the user experiences a powerful high within ten seconds. The other factor is that crack is inexpensive, both to produce and to buy.
Crack cocaine triggers the brain to release “feel good” chemicals known as endorphins. These endorphins give the user a sense of euphoria and energy. This feeling is short-lived, thus the user must repeat the smoking process over and over to remain high. This intense rush, combined with low cost of crack, contributes to addiction. Without crack, feelings of depression and anxiety may form. These feelings are generally so intense that the user begins abusing the drug again, shortly after quitting. Strict detox and recovery programs are the only way to cure crack addiction.
The longer one uses drugs the harder it is to stop.