The administration of aspirin is in no way equivalent to the removal of copious amounts of primary erogenious tissue from the genitalia for not significant medical benefit and for no medical benefit not more effieciently attainable through use of devices such as proper washing and condom usage.  Circumcision removes around 20,000 nerve cells (2/3rds), 50% of the mobile skin of the penis, the protection of the glans afforded by the foreskin - causing the glans to undergo keratinization.  Whether or not certain editors on here would like to admit the veracity of this source, it is none the less citing peer-reviewed papers - 
 A simple study of the history of the proceedure in the united states should tell you a significant amount.  It was introduced in the late 1800s by Dr Kellogg (as in corn flakes) as a method to prevent masturbation (meaning they knew it reduced sexual pleasure) because masturbation was demonized as the root of all illnesses at the time.  Dr Kellogg also advocated the administration of acid to the clitoris of female subjects for similiar reasons (and if you think White america doesn't have a female genital mutilation history read The Rape of Innocence by Patricia Robinett)