A lot of
altcoins are useless, but there're plenty of good ones that have an actual purpose, but we don't need as many tokens.
Ethereum is one of them.
I quit agree with you as regards ethereum and some few others like, EOS , Elasto, Ontology of which I know,but there are so many shitcoins out that are worthless, because the original project idea and team could not be delivered it.
In recent years, a huge number of really high-quality and unique projects have been created, of course there is much more garbage, but everything is not as deplorable as it seems at first glance, altcoins are not garbage!