The principle is simple, a social network is worth approximately the number of users squared. If we keep making at least partially interesting content, we will attract other people, spread the word about the steem and increase the value of it. If we do post-for-post, we will annoy the outsiders, the network will shrink and we all lose. So the point is - make something interesting. Earn 1-10 Steem $ per month. Keep growing and hope that the Steem $ becomes more valuable in the future.