Honestly, I think you saying too much, bitcoin is an investment that can bring good returns, but that doesn't mean everyone needs it. I need bitcoin because it has given me a stable economy and a desirable income, I also admit that without bitcoin, my economy would still be difficult.
But in my area, there are still many people who don't know anything about Bitcoin, but their economy is so much better than mine, and there are many people I would never keep up with even if I had more Bitcoins. Those people don't have Bitcoin and they don't need Bitcoin. Bitcoin is needed only by the people who really need it, not the whole world.