Yes it does, the foreskin provides a LOT of your sexual
pleasure. When cut your glans (dickhead) get keratinized and you
don't have a lot of the sexual tissue underneath glans. A lot of
men are actually VERY disatisifed from being circumcised... it is
impossible not to lose sexual pleasure from circumcision. Foreskin
does not block washing, you can just pull it back.