Every cell, virus, plant, or animal mutation or characteristic is explained by Natural Selection.
It’s almost like there is some motivation for it to make sure life exists and survives. But why do anything at all? If there is a God then it makes sense that it was put in place for life to exist but if there is no God then why don’t we just have a universe of non-living matter?
Because life couldn’t exist as we know it if there wasn’t an inherent desire to live. If living organisms didn’t have that inate drive to continue living, all species would become extinct before ever evolving.
Though I don’t have any actual knowledge in this area so who knows if I’m right. Just my assumptions!