RebE > Why would Hashem create something complicated when it can be made simple?
this is a fascinating question. Actually two:
1) would today’s world work if it would be a little simpler
2) why complexity of the world in general
On (1), the answer seems to be “no”. I read somewhere if a gravitational constant would be slightly different, the world would not exist… If you want Newtonian physics to be true, then there is no maximal speed of light and things will be very, very different… mabe big Bang (aka Creation) would not happen.
On (2), we can of course only speculate. Maybe Hashem wants us to give reward for discovering the secrets of the world, both physical and spiritual, whether in science or Torah. One of the rishonim, I think, explains why early people in Chumash lives long lives – as there was no science literature, each of them needed to observe star movements for several centuries to develop understanding of how the stars work. This puts science as a primary reason for human life …