>>6875059When it soothes you. I qualify things as "comfy" when they feel like a warming, calming and/or satisfying experience. The few moments after consensual sex are a sort of pinnacle of "comfy", for example.
When a wallpaper or a picture is comfy... to me, it's when it stops you on your tracks, even for a bit, and gives off that sneaky, almost unhearable calling for relaxation. It's rarely a violent feeling, more of a positive influence. It can be ignored or grasped, it doesn't force itself on you.
When something comfy is around you, you feel peaceful by nature.