There are countless places on earth that I’m sure have seen as few or even fewer visitors - desolate rocks in the middle of the ocean, remote mountain peaks, areas made inaccessible due to vegetation or climate. Going to any of them would be infinitely cheaper and less difficult than going to the moon, and yet no one has, because unless you have a particular reason to spend the money and effort to get there, why would you?
I’m sure there are scientists who’d love to run some sort of experiment on the moon, but aside from that it’s a lot of work for not much beyond bragging rights, and the US kinda got those by getting there first. There isn’t a lot of political will to spend billions right now to test things on the moon that we can reasonably simulate here much cheaper with computers.