The capitalization of all crypto currencies is so huge, that not every amount will hurt the markets. I don't know how much coins you have, but the trading (buy, sell, buy) is more wise behavior than the hoDLing (buy, hold). If every person will decide that they will not sell then the price will not drop no matter how many worst news come ahead. It depends on us 'the users of bitcoin' that where the price go. If we do not sell on lower price then those who need it will but it. While for trade I will suggest that at this time if everyone will hold then we will earn a huge amount rather than small peanuts in buying and selling at lower pumps and dumps.
Yes, I never sell my crypto. I always collect and keep my crypto such as Bitcoin and Ethereum because I want to invest in them. I do not want to sell by the price go up and I get a lot of profit. But to do that, of course we will need a lot of time and effort. We need a lot of money for capital and we have to be patience. I plan to keep my Bitcoin and Ethereum until the price and the amount reaches the number I want to realize all my dreams. I have a lot of dreams with Bitcoin and I hope I can make it all up with Bitcoin. I want to buy a house, build a business, and make my parents happy. Bitcoin and Ethereum price will go up so high in the future. Until then, I will never sell just like you said.