In summary, almost nothing would have changed in the world, if Bitcoin wasn't created.
You are wrong. Example, read what cryptoaddictchie posted. Let me quote it below:
Personally if bitcoin didnt exist Im not sure what would be my life. But since I learned and being associated with it, I confirm that its one of the best association or thing that happened to me. I am indeed a professional but doing my thing isnt enough and I have an urge to learn new things and luckily I found about cryptocurrency. Really big help not only on financial but also healthy to adopt new tech in our life.
Many people that are worth millions and billions today won't worth it if bitcoin wasn't created. Many lives that supposed to be living just average or in poverty becomes better and having a better life.
You are right that bitcoin is not the only asset that increased 20x, but it actually grows on very 1000x, does that means nothing to you? There are many exchanges today's and crypto businesses, helping people and economy. Does bitcoin creating ways for more emoluments means nothing to you.