kinda strange when investing in a volitile market. you can spend 10,000 $ into the market in january and come out less. than what a person invested in april with 10,000 $.
I believe you just answered the conundrum that troubles you. What matters most is when you invest. There are various market seasons in crypto. The bull market is more favourable for selling whereas the bear market is when valuable coins are sold at cheap prices. This is the time to buy more of these coins and wait patiently for the bull market.