True, it would be enough for each of us to take a few minutes to leave at least 3/4 comments a day.
But it's also true that we get discouraged if nobody replies.

I don't understand those users who just post and underneath their messages there is never a comment!
Of course there isn't, because he's obviously the first to not comment on other people's posts.
But users must understand that comments are the fuel of Steemit's engine.