Why is everything how it is?

Answer 1

Things simply are, they don't need a "purpose" which responds to the question of why.

Assume that things were different and you were a creature from some Science Fiction story - even though you swam in molten sulfur, were scaly and 4 meters tall you would still ask the same questions.

"The understanding that at the point in spacetime that singularity occurred, quantum potential collapsed into sets of virtual particles/anti-particles pairs due to vacuum fluctuations occasionally producing a non-zero value after which solar and planetary accretion condensed the remaining gasses into stars and planets the composition of which often includes organic chemicals which naturally form molecular bonds and in our case autocatalytic feedback loops ie simple replicators which proceeded to fill the oceans of early Earth eventually increasing in sophistication, forming lipid membranes around bubbles which protect the RNA and eventually DNA core of early single celled organisms, which evolved the capacity to live in colonies, becoming simple multicelluar organisms like sponges, which became intermediaries like polyps which became early invertebrates which branched into vertebrates, some of which became fish, then amphibians, one of which (Tiktaalik) is famously among the first to crawl onto dry land where amphibians branched off into reptiles, which branched into both birds and mammals, some of which survived the extinction event that killed the dinosaurs, became arboreal primates, later descended and learned to walk upright in order to carry food/tools/young and of course, these proto-humans eventually became us."