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.