People who are here just to read are great. Writers love them. Or we should! When people who haven't written anything follow you, they probably like your stories, or maybe they're studying what's being written to get some ideas before they take the plunge and publish something.

Welcome to Medium, and I hope you experience is a good one! If you stay more interested in writing good content than on who to follow or who is following you or in your stats, you'll probably do fine.