It’s been over 50 years since a human was on the moon. The need to replicate that psychological success has not been there for humanity given the costs and better use of resources. Mars is exponentially more expensive.
Think about it this way: who were the astronauts on the first lunar landing mission? Who were the astronauts on the last? Why do you think that we remember the first ones to do it better?
A colony on the moon is technically possible, albeit very expensive. Many nations could create one today. People are choosing to spend their limited resources on better forms of progress.
Regarding your second point, you were the one that said we should spend the same resources of a manned mission on robotic missions. So if it is going to cost $2 trillion dollars for a manned mission we should spend $2 trillion instead on robotic missions. Now it seems you are arguing that we should spend the money elsewhere. If that's your point it is a different discussion.