I'll give you my thoughts.
Realize though I am in a state of flux. I dont know myself what I believe.
I have been out of the tower since 83 and have read extensively trying to find the answers to the mystery of life.
You have to decide what you want to believe.
I cant decide because I read both sides of the issue, But I do lean towards God, their seems to be a better pay off, if I'm wrong.
If there's no God then when were dead were dead. I'll put my 2% of uncertainty on God and call it faith.
If you want to believe in evolution there are lots of voices arguing evolution on the internet, many of them I find illogical.
If you want to believe in creation, go to the institute of creation research, and read what they have to offer.
So, I am stating my bias, I am pro creation. But you have to have faith. The scales as I see them are 49/51, whichever way
you want to go the 2% differentiial is the faith factor, whatever you want to believe in God or no god.
My thought on the hermit crab from the creation part of my brain.
Man and animals are in a fallen state, we die within 80 years.
We were originally made to live forever. Sin put an end to that.
I took anatomy and physiology in college, thats the study of the human body.
Mans understanding of why we die before we reach 100, is called preprogramed cell death.
That's from the secular college medical anatomy physiology books that every one who goes into medicine
has to study.
I call it sin. Preprogrammed connotates a designer, that would be God.
I will suggest that when God made Adam and Eve in the paradise garden everything was perfect.
When sin entered the picture things started deteriorating, deevolving and adapting to the new enviroment, sin.
Once sin entered the picture creatures had to deevolve or as some scientist say evolve to become carrions
and creatures that would decompose dead bodies.
I would guess that the hermit crabs are a deevolutionary result of sin and were not the original creation of God.
They are scavengers, they clean up the mess of dying organisms,
The fact that they have to find a shell from a dead snail probably keeps their population in check, controlled or balanced.
I also think everything is unfolding as God planned, so that we can all return home to him.
I think sin was part of God's plan and design, call it an awakening.