For the better part of a year, I have been a regular member of a Wednesday evening life-drawing class at the Sebastopol Center for the Arts. I wish I understood better why artists are so interested in the human form, and I often ask myself this question as I'm painting. It's probably a dumb question - you might as well ask why lions are interested in other lions or sea anemones in other sea anemones.
Like lions and sea anemones, we are interested in our own kind. In fact, what I've noticed is that our minds are geared to respond to our own kind. I see this especially when I'm trying to paint a portrait. I'll write about this issue at another time.
I like this 10-minute sketch of Jo. Somehow all my back views are more accomplished than any other views.