superfulous blog

I'm just curious about this blog thing. I write to share things I think are important. I read blogs I find interesting, and comment on between 75 and 50% of the posts I read. I like hearing how people are doing and I like commenting so they know I'm interested in what they have to say (as well as to share an opinion). Since I write mostly for other people I like to get feedback. However, I don't want people to feel like they have to leave comments if they have nothing to say, so I thought I'd just see who is out there reading (as far as I know there's only one person who reads this), to decide whether I should bother blogging here. I mean, if the only people who read my blog are people I could just email anyway, then it's superfluous.
Right?
Right.