This whole topic gets weirder and weirder the deeper you dig into it.
Part of the wackiness is that a truly advanced civilization should be able to:
—Travel anywhere through space/time virtually instantly
—Use nanotechnology, artificial intelligence etal to create avatars instead of risking themselves when they visit “distant” places
So what they do need spacesuits for?
Bacteria? Something besides our gas mix to breathe?
“So what they do need spacesuits for?”
Allergies? Maybe in case their supply of Claritin ran low?