THE BCH catch 22 I cannot solve. Can somebody enlighten me?

I'm a big fan of BCH. I see its vast merits over BTC and many other cryptos. I see its potential as a replacement for fiat and BTC, as a cheap and fast currency, but I cannot get my head around this.

I'm in it for speculation. I'm investing in its potential now with the assumption that wider adoption will increase its value in the future. And here's the contradiction I cannot understand:

the fact that BCH increases its value the more it's bought, is against its own mission. But if it didn't potentially increase its value, people would not buy it, so that's against its mission too. So, that seems to me like a catch 22.

In a way, it would make more sense to have it as a stablecoin for general use: who would want to use something increasingly valuable for transactions, instead of just holding it like BTC? And when it loses value, who would want such an unstable currency as a main tool for commerce? But if it's stable, who would want to buy it at all?