Thank you Francois. Rajan, and David for your good and interesting comments.
I agree with Francois that sometimes our reasons remain mysterious. In this case there's some oriental sense hovering about or maybe below.
The background is too busy now that I really see the image. Thanks Rajan.
And David, being a cropperist is an instructive necessity for helpful suggestions, while blatantly disregarding a convention - you might say- is an iconoclasts purpose and delight.
Richard