A better technology than Bitcoin could emerge. What should we do if someone gives us a better system than bitcoin as a gift and leaves? It performs better than Bitcoin, and it even has the perfect decentralization of Bitcoin, which we value highly. Bitcoin was created in 2009, and now it's 2023. Cars made in 2009 cannot be better than cars made in 2023 or later. What if someone with as much genius and passion as Satoshi is creating a system better than Bitcoin?
You've raised a a very good question and honestly I've never thought about this before. Just as you pointed out, the world is evolving everyday, technology is constantly been improved and newer products are produced as we've seen with automobiles, televisions, aeroplanes etc. However, since Bitcoin came into limelight there have been other cryptocurrencies that have sprang up, claiming to outperform Bitcoin. Most of them have disappear into thin air while some of them are in life support fighting for their dear life. So what I can tell you is that Bitcoin is here stay and there's really not going to be any coin that would outperform Bitcoin.