Less predators, easier food sources
but why didn't we become the predators then? according to some we used to be predators on land, so we left ocean because we didn't like to eat fellow creatures in the waters, yes I can see it now.
we rather pick fruit and vegetable than engaging in daily violence and murder.
maybe we are meant to soon become birds and then space travelers, you see as we crawled on to land mass it was very gradual, just as we now crawling up in the air since 100 years back, and recently started crawling out into space, still very poorly adapted, but slowly adapting and more permanent.
did we long time ago in the form of marine creatures dreamed of space travel? could we really have grasped that concept already then, to go from 3 dimensions of water to 2 dimensions of land to 3 dimensions faint in the air and finally traverse limitless and freely in space, no boundaries of ocean surface or floor, not thin atmosphere or land, just perfect vacuum.
or we the first to understand the one quest of planetary life and evolution?
this must be the point and original thought for leaving the our origins because it couldn't be random or benefiting from evolutionary standpoint to make these transitions. so it was instilled in the origines of life on our planet in the DNA.
we are now in that big leap of faith to try move past this shorter temporary a little bit dull and limited 2D existence.