It’s not accepted by many people b/c it’s preposterous. To imagine that the millions of intricacies inside our body came about via modification through descent is downright laughable.
Evolution was caused by climate change.
It’s equally preposterous to compare the theory of evolution to the theory of relativity in their general acceptance. Relativity is fairly difficult to understand without a pretty good grounding in physics, while evolution can be summed up rather more succinctly and simply. And, most important, relativity hasn’t been politicized like evolution has, and hasn’t been co-opted to disprove the existence of God. Actually, the opposite, if one reads some of Einstein’s statements on the subject of God. Finally, proponents of relativity don’t try by any means possible to silence any dissenters - if there are any - or to pass laws criminalizing opposing views to be examined in our children’s schools.
Laugh if you wish, but fossil evidence suggests the first multi-cellular life appeared over 3 billion years ago.
Single-cell Eukaryotes go back nearly 2 billion years, multi-celled a billion and the first animals about 600 million years ago.
So, we are talking about very long periods of time indeed, and slow, slow baby-steps for each advancement.
DPMD: "...relativity hasn't been politicized like evolution has, and hasn't been co-opted to disprove the existence of God.
Actually, the opposite, if one reads some of Einstein's statements on the subject of God."
Actually, like Einstein, Darwin also believed in God, albeit a deistic "clock-maker" God, as some of our Founding Fathers also believed.
As for politicized -- well, there's a genuine laugh, since all the politics around evolution has been inserted by those who refuse to accept it, for religious reasons.