Nothing quite like fear of eternal damnation to motivate oneself.
Why strive for anything? Especially when the very bare minimum for survival is already covered by community.
Overall culture seems to be more and more nihilistic and individualistic after dropping religion. Few people may be doing the right thing and say that we have to care about future generations. But wast majority, looking at their actions, doesn’t care.
I would rather follow a more humanistic path, that we define our own existence, and that we should attempt to minimize our own suffering.
Same for minimising one's suffering. A healthy society requires a lot of sacrifice from individuals, even with today's technology.