Leaning Trees

Why do trees lean to one side?  Why do animals group in flocks and schools?  And humans into bandwagon?
  

Painting and Poem by Dr Abe V Rotor

                                                               Leaning Trees in acrylic (38” x 22.5”) 2011

I wonder at the trees leaning to one side

      in obedience or pride;

I wonder at a throng or bandwagon

     having neither lost nor won.

I wonder at the stream down the valley

     meandering as it may;

I wonder at the rainbow unexpectedly

     shine when the sky is gray.~