Depends on what authors you support with reads, upvotes and comments. I tend to ignore the ones that feel a lame meme is a quality post or simply share a Youtube video by someone else and call it a day hoping for upvotes and comments.
I will, in the case of the videos, if I find it interesting go directly to Youtube and comment there. While there, I tell the content creator that I saw their video on Steemit and link back to the site. Maybe they will join up and start posting their own videos here. But what do I know, I am supposedly bullying others around here.
RE: Leaving? Steemit is not Facebook, We Don't Need a Long Drawn Explanation. Just Leave.