I just went half way through your post (too big, should have added a summary for those who TL;DR) and got an idea about what you are trying to say. No shit coin is never good for a the economy. People who invest on those shit coins lose a lot and then those coins end up creating a bad impression about crypto currencies. Negative impression about something is never good for the economy.
An excellent answer, the only thing that can be supplemented, is if you are a dreamer, and believe that a coin that costs 1 satoshi, in a year will cost 2, then yes it's saving. Analyze the market, many such that will be in a month to have the same price?