That’s a difficult question. Most people are circumcised at a young age, so most don’t get to experience sexual pleasure both ways. The number of men who do is low. You would probably need to ask them.

Now, it’s commonly thought that it has less sensitivity because it is “unprotected” by it s natural sheath. This may or may not be true.

Also, there are other ways to reduce sensitivity, if that’s what you’re looking for, without going to such an extreme body modification.

However, you do you, only you know what makes sense for you.