Not all altcoin is useless because in fact there are some good coin nowadays despite of this current because of being have a strong structure behind. Which is it's up to you how to choose good project because only scam project nowadays is useless and turn into shitcoin always.
That's a good answer, there are still altcoins that have a good reputation and have developed it well. mathematically, indeed there are only a few good altcoins and the majority are on a bad track. the choice of us will determine what we will get, the decisions we make will determine what we will achieve in the future.