There is nothing valuable about going to the moon. The moon is barren and nothing of value there. It takes a long time to get there, with many things that can go wrong along the way. Landing on the moon is not easy, with an incredible amount of things that can go wrong during landing, and even more that can go wrong getting off the moon and making it back to earth. Reentry to Earth alone is incredibly dangerous.
Very expensive, lots of risk, very little return.
It doesn't mean we shouldn't do it for the science discoveries, but there is a lot of opposition for why we shouldn't be spending the money on moon missions. The unfortunate part is that it doesn't mean that money goes to better use if we don't spend it on moon projects.