Boys get circumcised because their father is.
Boys that are not circumcised are not circumcised because their father is not
For what it is worth I would imagine that the non-circumcised man is more sensitive in the relevant part of the anatomy
Thats what i have heard that things down there become less senstive. Which is why some prefer it off and others not i would have thought.
So if you have no staying powder start chopping