I have a number of congenital and polio related anatomical vagaries. As a result I'm pretty sensitive to morphology. We tivo'd and watched the entire TDF this year and I was acutely aware of the consistently symmetrical posture.
All of my limbs are somewhat short for my height, which makes fitting a bike (or clothing) a lot of fun. Absolute Bikes in Flagstaff spent a lot of time figuring out what size frame would work best for me and then what tweaks to add to actually make it fit. Since my left leg is even shorter, I had a choice of cleat position or a spacer - I've chosen cleat position, It doesn't permit as much adjustment but it is easier to deal with. I do tend to lean to the right which shifts my butt a little to the left for the final adjustment. It works for me.
I'll never look or ride like the pros, but I enjoy the heck out of riding and I think that's what it's about. If you don't like looking at my ugly form, try to pass me