humanity ultimate goal is to travel to other solar systems. if we don't do space exploration to expand our knowledge and be content walking around on a thin crust of rock. its like frogs in a well there's a bulldozer coming and you can't see it or even aware of it.
I thought Nasa suddenly stopped going to the moon since 1972 is because they found an alien base on the far side of the moon. That or we are in a computer simulation and there's not enough processing power to simulate another planet.