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!
There are a lot of projects coming in, and if it is not balanced with mass adoption there will certainly be a lot of worthless altcoins because they don't have many users, even many altcoins don't have demand on their market, many useless altcoins, but not all. just keep selective in choosing coin.