Is it normal that i have this obsession with cushion like material?

I've always had this weird obsession with cushion like material. I use to rip the cushion out of my couch and rub with my fingers until there was nothing left. I also use to rub my fingers against nail filers. Its always been weird to me. Now I've come across magic erasers. I love them and I don't know why. I can rub them forever. Recently I got a pack and rubbed 2 of them without really realizing it and now my fingertips are kinda sore and raw. In the middle of my thumb there's this smooth yet kinda hard mark where I was rubbing. It really bothers me because now I can't rub my fingers on it without it kinda hurting. I feel like I'm having withdrawals or something. Is this normal?