I think that Bitcoin is an investment and not a currency. I think it is misnamed.
Currencies are actually designed to slightly depreciate over time in order to get people to spend them on buying things or buying investments. That is done completely on purpose. Not too fast depreciation but not too slow either.
Bitcoin isn't depreciating, rather appreciating because of its design -- a limited supply.
Yeah, indeed, I often made this remark myself. This doesn't mean it won't change (core developers could decide to change the rules about limited supply), but this is unlikely. What is more likely is that something like the USDTether crypto, or an other crypto tethered to a fiat, will take the lead.
What I often say, too, is that it's probably the only way it could have work. When bitcoin was very young and it was considered a currency, people didn't care. It's only when exchanges appeared and bitcoin started to get very volatile that it gained traction. Maybe having speculators getting rich and broke with bitcoin was the only way to bring cryptocurrencies to mainstream focus : during those frenetic times, everybody has heard about cryptos, and there's not a single day now without a news about a big actor (either administrations or corporate) trying something around cryptos or blockchains. Maybe we needed all of that to get the yet to be born crypto that can be used by everyone. Should bitcoin have stayed that weird internet currency nobody used, it would have died long time ago.
Currencies are actually designed to slightly depreciate over time in order to get people to spend them on buying things or buying investments. That is done completely on purpose. Not too fast depreciation but not too slow either.
Bitcoin isn't depreciating, rather appreciating because of its design -- a limited supply.