It depends on your genetics and you won't know until you are given them. There is no need to be in pain after surgery, if they cut you open. If it's laproscopic you may need nothing more than a mild analgesic. If, after an open surgery, you feel really, really good or even euphoric on opiates tell your doctor and get off them as soon as possible. Do not take home a prescription! You are predisposed to addiction. There are other pain killers, and maybe a little pain is better than an opiate addiction. Those people non genetically predisposed to opiate addiction will not feel great after surgery. We feel like crap, even on opiates. They just put the pain in the background while we are nauseous and dizzy and sleepy. If Euphoric or feeling great, red flag.  If you fell crappy on morphine after surgery, you won't become addicted to it.