I found this excerpt from Wikipedia interesting on the topic of pain:
Effect of exposure to pain:
It is widely believed that regular exposure to painful stimuli will increase pain tolerance – i.e. increases the ability of the individual to handle pain by becoming more conditioned to it. However, in some cases there is evidence to support the theory that – the greater exposure to pain will result in more painful future exposures. Repeated exposure bombards pain synapses with repetitive input, increasing their responsiveness to later stimuli, through a process similar to learning. Therefore, although the individual may learn cognitive methods of coping with pain, these methods may not be sufficient to cope with the boosted response to future painful stimuli.[7] “An intense barrage of painful stimuli potentiates the cells responsive to pain so that they respond more vigorously to minor stimulation in the future.”[8]
Because of this, trauma victims (or patients in pain) are given painkillers (such as morphine) as soon as possible – to prevent pain sensitization.[7]”
http://en.wikipedia.org/wiki/Pain_tolerance
Now, I come from a family of stoics and I am not the type to pop pills for every little ache. I just choose not to, but others do and I don’t judge them or try to say that they’re being wimps for not handling it. They are the ones experiencing it.
The Institute of Medicine has this report on the subject of “overuse” and “abuse” of painkillers:
(Majority of Pain Patients Use Prescription Drugs Properly) “The research findings noted above need to be set against the testimony of people with pain, many of whom derive substantial relief from opioid drugs. This tension perhaps reflects the complex nature of pain as a lived experience, as well as the need for biopsychosocial assessments and treatment strategies that can maximize patients’ comfort and minimize risks to them and society. Regardless, the majority of people with pain use their prescription drugs properly, are not a source of misuse, and should not be stigmatized or denied access because of the misdeeds or carelessness of others.”
Source:
Institute of Medicine, “Relieving Pain in America: A Blueprint for Transforming Prevention, Care, Education, and Research” (Washington, DC: National Academy of Sciences, 2011), p. 145.
http://www.nap.edu/openbook.php?record_id=13172
http://www.drugwarfacts.org/cms/Pain#Data
So yes, psychologically you may become tougher, but I don’t think your body becomes tougher. Pain is real or not, and even imagined pain as in psychosomatic illnesses feels real. I don’t think we should overmedicate, but currently, especially in vulnerable populations like the elderly and minorities, and the poor, it’s more common to under-medicate for pain. Why should people suffer when they don’t have to?