There is Bitcoin & everything else is a shitcoin. Sure you can make big fiat gains in Altcoins if you’re lucky but none of them have the longevity, decentralization & proof of work like Bitcoin. I wouldn’t park a big portion of my net worth in any Altcoin long term. Short teem is fine but not long term.
I would argue with the longevity aspect, others - yeah, you are right.
