Urge.

Never considered it to be a necessity.
How could we know?
Feel the urge. Care.
We live well without it.
Never want to leave.
Why should we? Everything is in place.
Leastwise all we know.
All we need to live a good life.
What we adored, whorshipped.
There was no need to fly,
to swim through the greenish water,
to pretend being someone else.

We never reasoned.

So we remained.