Altcoins are not useless as you say, among them there are promising projects that are used and will be useful in the near future!
it is not clear will these projects survive till this time or not. because in such a bear market new projects run out of money
I agree most projects run out of money and then turns down silent. Though the project is promising enough, with no money or support, it will die. And then here comes investors saying they are a crap scam.
Not all altcoins are useless they are made for specific usage and let's not forget, mostly to used to raise funds.