Bitcoin is seen as a risky investment by most people. To those of us that understand what it actually is and how it works, it's the best kind of money/store of value ever invented.
The only other options I see for storing wealth are things like precious metals, real estate, or stocks and bonds.
I think precious metals are kind of useless as money and over hyped as a store of value. Asteroid mining could flood the market in the future.
Real estate is a lame investment. People need homes. When people buy up real estate to park wealth, it drives up the cost of homes for new home buyers.
Stocks are a maybe, but I would only buy stocks like apple and tesla. I don't really like most corporations.
Bonds are a joke, with negative interest rates.
In the grand scheme of things, Bitcoin looks like the most sane place to store wealth.
Why? Just because the other options have downsides, what makes Bitcoin good? There was a rush in 2018 - are you assuming it's going to happen again? Bitcoin seems to be super unstable, more so than anything else I'm aware of - why would I want my retirement savings to be able to fluctuate that much every year? What stops a new cypotcoin from coming along and being dubbed superior, removing the value of Bitcoin overnight?
Lots of new coins claim to be the next bitcoin, but the truth is, bitcoin is the next bitcoin. Look up the user aantonop on YouTube for why this is the case.