hi @soyrosa thanks for stopping by! I really like how you measure steem's worth! Engagement is the key and i try to most of the posts i upvote to give a thoughtful or a funny comment as well. (not the thanks mister, follow for follow kind sir :P)
Also i think except the money aspect of which i think everyone wants to see some value in their posts, good comments is the thing that push us forward and motivate us, especially now with lose prices. When an author invest his/her time posting something i believe he/she would like for someone to read it and share his/her view!