If you are doubting real-world applications, then it is clear to me that you don't fully understand Bitcoin yet. Bitcoin's existence itself is the biggest killer real-world application.

I agree that the existence of Bitcoin is already revolutionary, but that’s just the starting point. A tool only changes the world when it’s used to build something, and that’s where I see room to take BTC further.

You are confusing the location of the problem. This is not a problem of Bitcoin, it is a problem of society. Bitcoin is the best tool that we have ever had, expecting it to fix society is just crazy thinking.
It has never been as good as it is now, but people still find reason to complain. It is amazing how messed up humans are. If someone wants things to be better than they are, make it happen and stop whining online.