If we see the history of Bitcoin, then it's pretty easy to see how Bitcoin recovered its price. It would take time to recover, but eventually it did. So at the end of the day, holders don't need to be regretful. I am talking about Bitcoin, not about any other altcoin. Because even though the Bitcoin price has recovered, many altcoins haven't recovered yet. Even those who bought Bitcoin at the top in the last bull run, I believe they are almost recovered. If they are still holding, they will be in profit within a couple of months. Bitcoin has given us a costly lesson that holders won't regret. We should take that lesson and keep it in mind for the future.
Long term holders will not regret and only if it is long enough. If the longevity is not more than 4 years (one bitcoin cycle), the holder has to be calculative not to enter the market at the apex of the bull run and then experience bearish market for the rest 3 years.
It is always good to buy after a specific bull run, so that you are sure that you are getting bitcoin at a discounted price. Above all, it is just bitcoin and whenever it dips, I don't get too concerned because it will definitely reverse to progress.
It is true that as long as we don't sell we won't lose money, bitcoin will recover and grow in the long run. But I agree with you, we should avoid entering the market at the apex of the bull run and that would be an unwise investment decision. If based on the 4-year cycle of bitcoin, entering the market right at the peak, right in the distribution zone is really a bad idea because we have to spend 4 years waiting without any significant profits. Meanwhile, those who are strategic and can buy bitcoin at steep discounts during bear season will reap big profits.
Honestly, I don't know about everyone but for me, holding bitcoin for 4 years but only getting 20%-50% returns is a failure. Because people with knowledge and strategy bought bitcoin during the bear season and are now making x2, x3 profits. Therefore, it is necessary to have knowledge and strategy when investing in bitcoin, do not invest just because others invest, or invest blindly.