I believe that comparison with an over-the-counter antihistamine, such as diphenhydramine (Benadryl, Dramamine), Fexofenadine (Allegra), or Cetirizine (Zyrtec) would be more appropriate. Some of the people that I know take drugs to treat their allergies far more often than analgesics for headaches.

Here is a thought experiment. You are a passenger in a car, chained to the seat. Would you rather the driver drink shots of ethanol, smoke marijuana cigarettes, swallow antihistamine pills, or log in to Twitter/Facebook via mobile phone? Assume that you wish to minimize both risk of death and the severity of nonfatal injuries.