

First of all, “merely decorative” has a big impact on our physiological and psychological well-being; urban greening appears to be able to improve things from respiratory difficulties to stress, anxiety and depression .
Second, “merely decorative” isn’t even true. Trees lower both surface and air temperature in cities in a meaningful way (on the order of a couple of degrees on a well-treed street – that can be the difference between “ah, it’s a nice day for a walk” and “holy crap it’s hot out”.






Honestly I don’t even think I would care if they had landed. If they were setting up some sort of base I’d be into it – mostly to geek out over the new tech and techniques that would have to be developed for construction, environmental control, etc. But for just boots on the ground? Still kinda meh.
I’d be excited for boots on Mars, but again maybe for the same reasons - just to get people there and back would require an almost unthinkable (today) level of development and dedication of resources.