You miss the goal of cryptocurrency here, it is not some investment!.
Cryptocurrency was created to facilitate low fees, fast transaction time that no one can control. Not some buy and hold and profit.
Surely i will sell everything if the price is favorable to my coin, or if the price as posted in the market trading is High. We have some different kind of investor in the market trading, some are only buying and selling, some are for long term investment, and some are just the new comer in the trading, it is individual choices on what to do for such investment.