What if I don't want to stop? Am I sick?

I recently found this site. In fact, I recently found out that I have dermatillomania. I've always had picking compulsions. I pick at my nail beds, my nails, my toenails, and my hands. I've had this thing I call "crisping" since before I can even remember... basically I take my middle or pointer fingernail and scrape it against the side of my thumb, picking off skin. I also take small scraps of rolled up fabric and scrape them alongside my middle finger, making calluses, which I then bite off. Just a few months ago I began getting obsessed with cutting off the dead/dry skin on the bottom of my feet. Everyone tells me that it's weird... my boyfriend wants me to stop because he thinks that I'm hurting myself. The thing is, it doesn't really hurt. In fact, I love it. It's a comforting thing. I feel like if I get rid of it I'll be losing a part of my ability to calm myself down. Is it wrong that I don't want to stop and I don't think that this behavior is that strange? The only thing that bothers me is when people ask questions about why my thumbs are raw..