I'm not agreed with you on this point if I don't sell my bitcoin then how I can earn a profit, yes you can say that bitcoin should be saved for a long term which makes some sense. long term saving would be a great idea for gaining a large amount of money.
Well it's really simple, if you bought 10 bitcoins at 100$ dollars each meaning that you spent 1k for 10 bitcoins now you would have 20k dollars which you don't have to sell because you can use them as money, you can already buy many things with bitcoin so essentially if you do it would be the same as selling them and let's be real here, most people in this forum won't have the tools or knowledge to trade bitcoins and actually make a profit from it long term.
people always love to keep dreaming about how much they will have money if did not sell their bitcoin ,
it won't change anything , better to use and sell bitcoin as needed as possible ,
i mean to save it for long term some and to use it daily some ,
as i believe you can't resist to sell the whole bitcoin when it's hit the highest price.