>>55899422So I had this question myself a lot. When it comes to giantess I'm told that the appeal is in the comfort of being in the care of someone who can step on or demolish anything that would harm you. Also it seems comfy to just ride on someone's shoulder. I used those kinda appeals in regards to interacting with Sana.
Size difference in the context of women a foot or two taller than you, or shorter, is just fun variety. The types of physical positions you both can get in can greatly widen and enhance the fun in that scenario.