you don't have to mutilate yourself to last longer in bed and you only have around 1,5% less chances to contract a std by being cut according to some studies, i don't think it is worth to alterate your sensations during sex for just so little benefit and that's assuming there is a benefit because most of so called studies are not reproductible these days and i won't even the issues about samples and methodology wich makes it even more worthless
France