Fortune - First Edit

[DonMar]

Impartial winds prop up the old and leaning
then turn their backs and blow them to the ground. Should it be 'turns their backs? The sense of the image isn't quite clear for me here.
Sincerity or irony? Blind to meaning, Suggest 'Ironic or sincere' for a smoother flow.
nature neither fickle nor profound.

Torrential flood submits to desert drought,
warm island disappears in shifting sea,
some will suffer, others die for naught;
yet fate does not remember or foresee.

We walk oblivious in smug conceit,
though nature does not promise any day; Awkward phrasing. Perhaps something like 'Though nature promises no perfect day'. Just a random example.
surprised when troubles force us to retreat, I like these two lines.
when what was solid suddenly gives way.

We travel here on steeply inclined planes, Would the flow be smoother as 'Travelliing here on steeply inclined planes/We struggle with imaginary reins'? Interestingly, I perceive the planes as being upward - much like the hill that Sisyphus was forced to climb.
still struggling with imaginary reins. Very nice image.