There are some that wouldn’t actually feel bad about it, Infact some have been able to get more holding of bitcoin again. The only thing is knowing when to take profit and when to buy more. Take for instance someone that sold at 40k plus, late 2020 to 2021 and bought last year (2022) where there was a huge dump which saw the price drop to as low as 14k certainly didn’t lose or will regret.
Also there are some certain price tag that some people have setup to be there pull out plan and I don’t see anything wrong on that because you are certainly not predictable of how high it will go or how high it will come down. The best after long term holding is to take profit when you can.