Most People treat Bitcoin as an Investment and agree that they wouldn't spend it even if they could buy everyday stuff with it. Then what exactly are we expecting from a global adoption of Bitcoin?

When ever there is a talk or rumors about adoption of Bitcoin by a company , I see it everywhere and might even agree with it sometimes. "Why would I spend my Bitcoin to buy stuff , when it can go much higher in value?" "Why would I spend my investment?"

Most people might have come to this conclusion from the pizza story , where he bought 2 pizza's worth 10,000 BTC (that transaction was necessary to get us where we are. Because that transaction showed Bitcoin has value and can be traded , thank you Laszlo Hanyecz)

How about stable coins then?

Using stable coins instead of dollars makes no sense because there is (theoretically) real fiat currency being held in a bank account to back it up. So it's like using dollars but with extra steps.