That 12 year history you are talking about:

https://www.bing.com/search?q=bitcoin+price&form=ANNH01&refig=4b6fdd0bbb26452ba7417f030f9861f1&sp=2&qs=FT&pq=bitc&sk=PRES1FT1&sc=8-4&cvid=4b6fdd0bbb26452ba7417f030f9861f1

Most of the rise has been in the last year and it has fallen by almost 50% from its peak in the last couple months. There are some shenanigans at work on this including Tesla's and Robinhood's involvement.

Yes, money can disappear all of the sudden. Just do a search on "market crash wipes out wealth."

Search Hunt Brothers. A tech writer here talks sometimes about how his company and fortune was wiped out by the Dot Com bust.

Are you aware of a thing call the Great Depression? You know the one the Great Recession was named after.

TEK