By "hardware investments" I take it you mean mining rigs? You're two years out of date, Ethereum moved to proof-of-stake in 2022. It doesn't depend on special-purpose hardware any more, or any hardware of particularly significant quantity. Bitcoin still does does but it's a shrinking share of the total cryptocurrency ecosystem.
Again, if you aren't interested in cryptocurrencies then feel free to ignore them. But making confident pronouncements about them when you're not familiar with how they work or are used is not that. Poetic and emotional language is no substitute for knowledge.