At the end of the day, anyone like me who has money invested in the S&P 500 can't be too happy about the 30% return because if we discount inflation it comes to almost nothing.
Not all stocks are like that, also better than having fiat that comes down to loss. If I will have to be open minded, there is nothing bad to diversify. But Bitcoin and some other cryptocurrencies are most profitable since the last decade till now but there are some successful stocks too. Also the more the adoption, the less the volatility.
This is based on what I read, have you read about gold also, that its price of $678 in 1980 have the buying power of its price of $2,142 in 2020. It's price per Ounce now is $1,795.
Gold reached a price of $678 U.S. dollars in 1980, according to a breakdown from Visual Capitalist. Accounting for inflation, based on calculations from Officialdata.org, $678 in 1980 held the same buying power as approximately $2,142 in 2020. The precious metal technically broke its U.S. dollar all-time high this year, hitting $2,075, according to TradingView data. Its 1980 record purchasing power level remains unbroken, however. Since its push to $2,075 in August, gold has retraced in price, sitting near $1,778 per ounce at the time of publication.