Crossing oceans and building planes wasn't done for the sake of it, those goals were clearly useful.
The biggest problem of the moon mission isn't SLS, it's that the moon is a big dry ball of rock with nothing of any value or use there. There's literally no reason to go.
The biggest problem of the moon mission isn't SLS, it's that the moon is a big dry ball of rock with nothing of any value or use there. There's literally no reason to go.