1 btc still equals to 1 btc?
Isn't this what we are saying every time we encounter the volatility argument?
USD is a get poor slow scheme, It will surely make you poor in the next 20 years. > get poor slow
BTC is a get rich fast, get poor even faster scheme.
On a 5-10 year period, btc will surely make you rich. > get rich quick
On a 1 month period, it might make you 50% poorer. > get poor very fast
That's how bitcoin has been since the beginning. It is all about having a choice. Depending on what they want, they have the option to:
1- get poor slow,
2- get rich fast, or
3- get poor very fast
You also forgot to mention that when BTC gets cheaper, then a merchant that accepts BTC will actually get more satoshis for a product/service that he sold... that's not a bad thing.
Regarding fiat "stability", it's a myth.
Sure, you may argue that USD or EUR don't experience 5-10% volatility in a single day, but they're still volatile currencies (I still see different prices every time I visit the supermarket).
I remember back in 2008 you could get 160 USD with 100 EUR. Now you only get 108 USD... not to mention that people's wages have fallen.
Gold is volatile too. Houses are volatile too (remember the housing crisis back in 2008?).
In fact there is nothing stable in this universe:
I get it, Homo Sapiens is a deeply insecure species and will always seek "security/stability", but this is an exercise in futility. It would go against the universe's laws to achieve 100% stability and 0% risk.