So even if they might say that they are ready for either up or down prices, they might end up not really being prepared because they ended up over-investing in light of their own mental preparedness.
Halving 2024 I released all Bitcoin holdings that had been DCA for 4 years (maybe it's too early to release it but as a small retailer the economic situation is not always friendly), full of twists and turns and indeed as you said it is not easy to win mentally from the fluctuating price situation when the financial condition is getting thinner but I have gone through all that. From the sales I managed to build my dream house.
Now facing the next 4 years I will start DCA again with full preparation from before, with strategies and all the shortcomings that have been evaluated.
I secretly learned a lot from all your opinions about DCA.

Congratulations on your building that's a Good news especially if you from Nigeria.
Your statement I will start means you haven't started yet and it's quite risky been a Nocoiner
Now you can't buy even at the price you sold.
Mind you am not against your decision but atleast I think leaving some wouldn't had hurt.
Aside hurt it’s advisable not to clear everything base on bitcoin price growing gradually, starting might be difficult whereby an investor starts from zero point. I guess sometimes withdrawing strategy is totally different from dca and not so easy. It’s pretty nice to know about bitcoin profit making besides 4 years is so long it seems few are ready to sell now but if they’ve gotten to a balanced level selling can be considered.