I think buying and holding is not the only investment. Now I find that we can earn bitcoin in many ways like mining mine or participating in signature campaigns. From there we can cum bitcoin and make a profit. Buying and keeping bitcoin is a safe and long-term investment in the future but it is not the only way.
Buying and holding is not the only way to have bitcoin, but for me buying a bitcoin with a low price and holding it until the price will get very high is the best thing to do to have many money, and we can also get a bitcoin by doing trading and off course mining.