No man has been on the Moon in the last 50 years.
The main reason for this was money. The cost of getting to the Moon was, ironically, astronomical.
The Apollo program was one of the most expensive peacetime programs in US history. It cost, at its peak, 2.5% of the American gross national product, per year, for ten straight years. That’s a boggling amount of money. In exchange, we got 842 pounds of rocks and people died.