Fiat currency is an agreement of settlement using an inflationary mechanism created at will with no work required to provide value.
Bitcoins are an asset created in response to work performed, scaling proportionately with the work required giving it value.
It really is that simple and makes perfect sense.
Incorrect. ETH postulates that there could be a correlation between gut length and brain development, the paper explicitly states that there could be an alternative methodology for how we manage the metabolic requirements for our brains. Back to the point on humans having canines. Herbivores also have canines to tear through fibrous plant material see (gorilla, baboon and hippo).