A lot of "these people" are passionate about both. Long-term thinking shows the appeal in both renewable infrastructure on earth and space exploration. Maybe s

A lot of "these people" are passionate about both. Long-term thinking shows the appeal in both renewable infrastructure on earth and space exploration. Maybe sometime on the far future someone will say we evolved for tens of thousands of years to live right where we are now, and if only those people who're enthusiastic about colony ships had that much passion for asteroid mining and Mars culture.