I've never missed it, never wondered what it would be like either. Maybe it's just me.
Fifty-six percent of American newborn males are circumcised. So approximately a quarter of American newborns are "altered". From what I have read this morning, it is a late 19th/early 20th century procedure that was started for the same reasons many procedures were for during that time period.
They didn't have the capabilites to establish good hygine during that period and the procedure did prevent infection and other complications. Also they theroized it would stop the spread of STDs, and other sexual things.
Obviously we know this is false today, parents do it for 3 reasons: Culture, Religion, Conformity.
Think about it like this as well... I don't have foreskin, so I think, I would be a bit hesitant explaining to my son how to clean his. Never done it, never have to do it, how do I know if I'm doing it right?