Many Bitcoin holders now are selling their Bitcoin, I may that they are already satisfied with the current price.

How about you? I'm not sure if you're following them as I know it was not your target price. You will think about selling at $80k (at least), well, I'm not discouraging you to do it and wait for that but tried to be practical enough. Coz if you are already that 100%, 50% gain, I think that will be enough, IMO. Actually, you can still reinvest if you want to.