The reason it is my favorite shape:
It never ends.

And many things do.
Just as many things repeat.
Never ending conversations,
Never ending emotions,
Like the one I feel for him.
Never ending jokes from those who think themselves funny.
Never ending dread and mourning when someone is lost.
Never ending lessons tone taught and listened to.

The never ending life of a soul.
Everything repeats,
Everything is recycled,
Everything lives on,
And everything is born again.