Its simply this, I am in it for the long term, for every peak I could pick, I would also be wrong.
So next time when I sell, thinking its a peak, and it does not come back, I will miss out.
So it's just not worth the effort/stress over a 10 year horizon to essentially get a zero sum game
True - but if you sold you could now buy 4 times more BTC for your long term.