Re: I agree that developing Mars is going to be a centuries-long process...
> an even higher death rate among Virginia colonists
That's no problem, as you know bad things only happen to other people... Everybody knows they will survive and prosper.
And anyway, those Pilgrims didn't leave for a pleasure trip, they left because they were facing persecution back home. As I already said further up, it's not the successful middle/upper class who will immigrate, it's the poor, the refugees, the people for whom this could be a chance to a better life, it's a double or quits game.