if no one spends bitcoin maybe altcoins will be gone, but chances of that happening is very small, remember bitcoin is cryptocurrency a great for the future
Altcoin will gone and bitcoin will die, as such no one is spending money, I think it imposible, bitcoin created not to be stored but used for the transactions.
Bitcoin is money and one of the most important characteristics of money is to be a store of value, so by definition bitcoin was created to be spent that is correct but it was also created to be stored for as long as we want.