Good debate guys! I often think about this very subject. I remember when Steemit first started, and I was campaigning for comment rewards, as I believed, and still do, that comments can really increase the value of a post.

However, it is a double-edged sword, without comment rewards, you'd probably get more honest comments, however maybe you'd get less.

Then again, people are more likely to comment on a high value account's post, because they know that just one vote from that account, could give them more than an actual post.

I've seen this with my own account, when it was high value, I got an average of about 30 comments per post, these days I'm lucky to get 3 or 4.

Maybe more people would comment if they knew there was one or more comment curators, who knows? Interesting though, as it is ultimately human behaviour, which in itself is fascinating!

Cg