If a species is arboreal (like my yinrih) many may choose to live permanently in microgravity to allow them to use all of those prehensile extremities for prehending instead of walking.
Also consider the reasons why a species pursued spaceflight in the first place. Humans were using it as a show of power. Rockets are just fancy missiles, after all. The yinrih pursued it for religious reasons, meaning that people who died while furthering that goal are venerated as literal martyrs.