I hope the worthless projects (worthless in a literal sense, not shitcoins, but projects like ADA, XLM, IOTA and such) also rise a bit, maybe that also gives me enough confidence to keep these too...
There is no useful or useless. There are popular and not interesting 
I Think that in the future will somehow distinguish projects for the benefit of the economy, the world and other areas. Well... who speaks louder is the best.