Do what works for you. I guess every trader or investor usually has a strategy that they believe works well for them. While I was trading, I mostly traded altcoin, although when I traded Bitcoin, it was just once and was futures trading. If I get back to futures trading and make some profit, I will still invest a lot of my profit into Bitcoin. For now, I am only bent on accumulating Bitcoin on a DCA strategy, even if the goal is not to sell in the next bull market. But in the future, more bull markets will come, and there is hope to sell at a high price and still make a profit.
Everyone has their own way of trading, and it is true that everyone must have their own way of making a trading strategy, because this depends on a person's character and comfort in trading, whether in altcoins or bitcoin in market situations.
I want to give you a little advice, it's better to sell the bitcoin you have when a new ATH is formed, then what is certain to happen is that the bearish season will come again, so from the sales you can buy more bitcoin in the next bearish season, I think that is the smartest move to accumulate more bitcoins.
How can you tell that any price you see during the bull market will be the ATH? No one knew that Bitcoin's last ATH would stop there, because since it was still in the bull market, there was still speculation for $100k back then. But yeah, your advice is a motive I have always had in mind: to sell when the market is very bullish and wait for the bear market to settle in again, then buy more Bitcoin. Definitely, the bear market must come after a bull market, but an investor would be more profitable if they sold at a high price, and one doesn't usually know where the price can end in every bull season.
If there is a purchase strategy, then you must also have a sales strategy, I also think with you that we have the potential to get more profit to get other high prices after the $ 100K target has been formed by Bitcoin, 1/2 or 1/3 Bitcoin You have when you reach that level you can sell it at that time, to keep your position safer, and the rest serves a higher price movement, maybe at $ 100k+ - $ 130k can be an alternative sales of more profit, as well as if it turns out before it reaches The remaining Bitcoin sales level target, you already have a profit in the first sales of $ 100K.