I had used Bitcoin in the past as a currency, but we're talking about 2013 or 2014, more than 10 years ago. Back then, Bitcoin was valued at $200 and it didn't seem too much of a deal. This however has changed, and it's now worth over $100,000 (and recently surpassed a new ATH once again), rendering an extremely valuable asset that I'm not going to use on something that I can simply pay with fiat currencies. I don't think I'm going to start spending Bitcoin, unless it's time for me to convert to fiat.
Perhaps your idea of a marketplace where you could deal with cryptocurrency doesn't sound bad, I'm not sure if I'd still use Bitcoin, because I consider it a long-term investment, but I would consider using it.
Regardless of your use of bitcoin, it is a currency so far. We can think of it as a long-term investment asset, but it is essentially a currency that can be used as a means of payment. The increase in the value of bitcoin has likely made some people reluctant to spend it as a currency, but they tend to hold it in the hope of getting a high return over time. I don't blame people for having such plans for bitcoin, but the fact is that the value added of bitcoin doesn't change its use case as a currency.
I don't use bitcoin as a means of payment until my country's government legalizes it. Of course I can force myself to use it as a means of payment secretly, but this is clearly against the laws in my country. In the future, if there is a change in the rules, I think I can also use it as a currency to pay for something I want.