If anything, it makes them even *more* sensitive. I had my left one for many years. Some men love it/get turned on by it, some are nonplussed. Because I only had the one, it still left an option open for those that didn't care much for it.
But, in terms of the pain/sensitivity - it takes years to fully heal (I mean as in, it could be 1-2 years when you're still getting discharge. Gross, I know, so think about that.) And it makes it almost too sensitive sometimes when you don't want *anything* touching it.
Definitely things to consider.