The problem with cryptocurrencies is very simple. At some point X-COIN will reach a maximum price, $MAX. Why would anyone buy X-COIN at $MAX? By definition it

The problem with cryptocurrencies is very simple. At some point X-COIN will reach a maximum price, $MAX. Why would anyone buy X-COIN at $MAX? By definition it will lose you money. You can repeat this argument with any amount, because ultimately you're just going to subject someone else to the same situation. Regress this to its logical extreme and you see there's no point of buying it at all, unless crypto itself has some meaningful value beyond its converted price to fiat. That itself has yet to be proven.