Steemit: I still don't get it...

I did enter Steemit in order to follow nice posts and interesting stories and storytellers...
I don't post - although one of the interesting persons I follow urged me to do it.
I simply reply some posts, with very simple and short points of view (sometimes not even points of view to be honest).
Nevertheless everytime I enter the site to check on new stories or new replies to my humble comments the number of "followers" has increased...
Why should anyone here follow me? Or am I - again - losing some important aspect of this site relationships?
I would appreciate some enlightment... :/