Bitcoin lacks a real world use case that cannot be realized by existing payment networks. There is no instance where Bitcoin is easier and more convenient to use than traditional remittance networks or fiat. Simply put, the world does not NEED bitcoin. The best we can hope for is a collapse of the world bank but until then credit cards and banking instruments remain easier safer and more convenient
It might not be easier and more convenient at the moment but it should be in the future. Why pay $50 dollars or some other extortionate fee to send money around the world when you can do it for little with bitcoin. You're also forgetting that some people in developing nations don't even have access or are allowed a bank account which bitcoin will solve.
The uses you mention I agree is where Bitcoin wins over current methods. Sending money globally without all the hassle and fees that go along with it is a major plus point. Bitcoin may not be that easy to get but once you have some spending it is become easier, the likes of Conbase as an example now accept faster payments via your bank although I think this is just in the UK, and their app is very easy to use when purchasing goods.
I know companies like these also charge a fee but it is companies like this that will help the average person to quite easily buy and spend their coins.