When you are put into the Vortex you are given just one momentary glimpse of the entire unimaginable infinity of creation, and somewhere in it there's a tiny little speck, a microscopic dot on a microscopic dot, which says, "You are here."
https://en.wikipedia.org/wiki/Technology_in_The_Hitchhiker%2...
I think once you start to grasp how truly unimaginable large this number is, you get a comparable feeling to how the cosmic scale compares to us in an emotional way.
According to that guy, there will be a new ice age in 50k years regardless of the current global warming being stopped or not.
They are even connected. Making the world incrementally better now will impact the lives that your loved ones and their loved ones are able to lead.
But ... there are many lifetimes between now and then, and the quality of those lifetimes (at least the earliest ones) is something we can have an influence on, so what we do matters a lot.
So, really, it boils down to what scale you choose to measure the consequences of your actions by.
I think it's uplifting to know how much more there is than what goes on around these parts.