-this ‘Universe’ (seems to me) is so incredibly intelligible and information rich (information theory rise, e.g. entropy timeline of the observable universe).
-there seems to be something rather than nothing
-there doesn’t seem to be anything that happens without a cause (except, it seems to me, our will).
These seem to be important data points… :)
1. Your brain/body evolved to interpret this richness in a universe that is unintelligible to us a conscious brain that evolved in that universe would almost certainly view those unintelligible to us rules as intelligible lest there be no purpose to that consciousness. Our brains also quite demonstrably processes unintelligible (to us) things as intelligible when they are not.
2. This is true in any universe where someone is around to point out that something exists and is a priori with or without creator beings.
3. Our will is either deterministic (happens with a cause) or it is not. In the case that it is deterministic we can ignore this example (which personally is my view). In the case it is not then the non deterministic part is reduced to the result of quantum coin flips altering the result in the larger scale world. Assuming so there are two possibilities either everything else is also happening at that level without a cause (which is counter to your point that it is only will that behaves this way) or the quantum coin flips are in some way deterministic which means so is will.
There is a lot of work in the social sciences showing that whether one asserts there is free will or not (as you allude to) is correlated heavily towards belief in God.
If there is no free will, it is interesting that the universal laws of Physics would create clouds of atoms that assert there is a God :)