no one can predict the future, so whatever you did in the past, was pretty much acceptable. so long you feel satisfied and happy at the time of transaction, you are already winning.
what if the opposite situation happened, btc was just part of the history and no one is talking about this anymore? i bet you are very happy that you discard your coins before it goes to nothing.
Maybe at that time, those who succeeded in selling large amounts of Bitcoin would be happy because their profits had doubled from when they bought Bitcoin first. And that's also how we felt when we sold Bitcoin at $60k some time ago. And when we see the price of Bitcoin reach 4-5 digits in the future, we might also regret it.
It is true that if Bitcoin cannot develop as it is now and instead disappears, those who have sold their Bitcoin too early will be happy because they have succeeded in making a profit by selling their Bitcoin. Well, that's life. No one will know what the future will be like.