Both sides of what? Sexual pleasure? How would one prove it?
Google is your friend. There are studies which research the sexual effects of circumcision. I'm not about to discuss the technical details of the matter, nor do I care to.
If you have to bring in human sacrafice your argument is rather shallow. Yes, circumcizing a baby boy for religious or health reasons is a hell of lot less barbaric than mutilating a female of age so she wont have sexual fullfillment. If you cant tell the difference. I dont know what to tell you.
The human sacrifice was an example of what's barbaric, even though it was done for religious reasons, and a baby wouldn't have remembered it either. Circumcising a baby boy for religious reasons is no less barbaric than circumcising an adult as a form of torture or punishment.