When a woman rides you facing you, you see the breasts and their movement can be an intoxicating sight.

When a woman rides you with her back to you, you see the curvature of her waist and hips, and if she leans towards your legs, that position intensifies the angle, and that, too, can be extremely sexy.

In my experience (which is admittedly limited), that - those views that a man can enjoy without having to move much - are the ultimate pleasure of having the woman on top, and not any sort of objectionable laziness, weakness, submissiveness, non-alphamaleness, desire to give the woman control or special kind of stimulation - none of that.

In other words, it simply provides an unparalleled view of the sensual beauty of the woman's body in motion.

Also, if the woman leans, she can stroke either the chest or the legs of the man with her nipples, and that, again, is an unparalleled massage experience.