"evolution" as you worship it is the deluded belief in self-creation. It is based on the assumption that you could create yourself if you had a long time and a "gnosis" life-force to personify into your servant.
Repeating "why" like a 2 year old isn't an argument.
All continency must rely on the uncontingent. All causality must rely on the uncreated. Without this you have 2 options:
1) you have yet to go far back enough to the Prime Mover
2) you have an infinite regress, which is subhuman nonsense
So nonsensical to deny this -in fact- that even you see the need for the uncreated, uncontingent Prime Mover. This is why you therefore claim that everything is its own uncreated, uncontingent Prime Mover.
This is why you claim that God is not necessary, you believe yourself to be a suitable replacement for God as long as you have your "gnosis" life-force bs. This is the capital sin of pride: believing that you have usurped God, and your fallacy of evolution only exists to self-justify that.
The Church did create all forms of the sciences in their original, rightly ordered forms. That is because the Divine cannot be studied, as the Divine is totally uncreated and uncontingent. Only the Church can justify that the Divine is nowhere in creation. Similarly, since all has the same creator, God is everywhere in creation.
We call this a paradox.