Maybe I got a different opinion because for me, I just trade btc and reinvest the profits again at the lows and Im never upset with my strategy till now. More profitable than any business I could do

You are just basically trading and if you can make money from it then it's for you but remember that trading is not for everyone so it's better if they find their way of making money. But investment in Bitcoin is still the best imo though since you can't see such investment would grow too much when there's a bull market but it also takes some time before the bull run would happen the same as the bear market too.
But I like the cycle of Bitcoin that's why they said it's very volatile because no one could actually guess the right price and at the same time the price is moving up and down. Be it a FOMO or FUD.