Altcoins will exist regardless of our desire. Everyone can make their own cryptocurrency. The value of the token is determined by its popularity, in this and the meaning of the free cryptomarket
Indeed, but this freedom comes with a price tag. Anyone can create a scam ICO, a shit coins, a fraudulent crypto scheme to lure naive investors.
We need altcoins, but not as many as we have today. Because 90% of them are pure trash!