and landers will be dispatched to mars to create the settlement.
But getting there and just being there, there's a high chance of death. In space there could be a leak in the hull and they could suffocate. While on Mars there is high radiation and too much of it on a human body will kill him/her.
There will be 2 crews of 4. One will depart in 2024 & the other will leave in 2026. There's only really pull factors such as research, adventure and colonization.
The perspectives of the astronauts will probably be a little excited but also extremely scared. Anyone born on Mars could be considered a martian but won't be able to go to earth because their heart would be too weak.