This crass garbage has no place on HN.
Where does the OP say anything about a change of sensation in men?
For a single person considering the question on their own, the best choice is limited to what's available to them. Since there are (approximately) equal numbers of men and women considering this, neither population affects the universal rankings.
But for a couple considering their birth control options, it doesn't matter on which of them the responsibility and direct benefit fall. What matters is the effectiveness and side effects. So they can agree on which is best without worrying about who holds the responsibility, etc.
So, for example, the pill is better than condoms, because it has a lower failure rate and doesn't have the side effect of severely reduced pleasure. The fact that a single woman can't depend on condoms and a single man can't take the pill cancels out, because there's one of each of them, and the couple is making the choice for both of them.
IUDs can also make the cervix more sensitive to pain in general. IUDs also can slip out.