All living species go through evolution.
Before the Chicxulub crater impact, there were no humans. After the impact humans walked the earth millions of years afterwards....a geological blink of the eye.
I think all species live for a while, then some massive extinction occurs by a natural phenomena. Consequently, (through evolution) a new species is derived.
Humans have been walking the Earth for thousands of years. Thousands of years is negligible when compared to the age of the universe.