Will you still be holding BTC if the price is fixed like a Stablecoin? Will you buy more to keep for the next generation if price neither increases or decrease, be honest, let me hear your thoughts.
Your question op is too hypothetical, due to in reality everyone knows that Bitcoin is decentralized, which means that it can never become the stablecoins you are talking about.
I'm still wondering what actually prompt op to come up with this kind of question at the first place. Because if that was the case then its main feature or purpose is been taken off and there should be no need or whatever. However, bitcoin is actually designed for what its stand for which is (decentralization) and nothing absolutely can change that not even till tomorrow.