Just looking at the temperature range on Mars. It's 1.5x the distance from the sun as earth and the surface temp ranges from a balmy 70F to -225F.
Elon specifically has this dream of colonizing mars, but it seems unrealistic. Perhaps in the future there could be an outpost where humans can visit for extended periods of time, but living there forever seems kind of sucky.
The biggest problem with living in space and on mars or the moon is the high radiation levels. Ultimately living in space is for machines.
For me, I live on a boat and explore the worlds oceans and coasts. It is a wonderful adventure.