Everything dies at some point. Even the universe probably will. As for Bitcoin, it's currently technologically relevant, but we honestly can't know right now for how long it's going to be this way.
There's also a certain limit on the price of Bitcoin at any given time. The global economy can be monetized, and Bitcoin cannot be worth more than all of the goods and services in the world. Of course, the global economy can grow, but it does so pretty slowly.
It's okay not to set a strict limit on how high the BTC price will reach, but there is a ceiling for that. Moreover, having a target in mind can be helpful to decide when one is actually ready to use/spend Bitcoin, and not just hodl it.
You have no idea where the ceiling is, and you can't know that. Justifying bad decisions with this kind of rhetoric is not smart. Many have sold too early because they have doubted. They have made this mistake, and it is good to admit when one has made a mistake instead of trying to justify things.
People who predict a price for bitcoin are putting a cap on it. They're just saying bitcoin will reach a certain amount by a certain time. They are not saying the maximum amount for the bitcoin price is what they predict. It's normal for people to predict the bitcoin price.
Nobody can say the maximum price bitcoin can get to because we can never know. As long as bitcoin is still alive, it can get to any price. What we can do is predict what price it will reach at a certain time. People don't think $1 million is the maximum; they're only not thinking about what comes beyond it because getting to that is a lot.
There was a time when people did not think about bitcoin beyond $ 100k because it was so far away from that point.
True but there are plenty of people who are actually putting a cap on it. It is a different kind of post. Many have actually doubted that $100k is possible at all, ever.