Don't worry, Bitcoin crash is impossible.
Do you see news about NASDAQ?
Rise, rise and only rise now
Next point $25,000
What's floating the stock market is the low interest rates around the world.
Investors cannot save money in "fixed deposits" in the banks because the return (ROI) is so minimal so they buy stocks, and others buy stocks as well and sometimes there are bad news causing stocks to drop but then more people buy it.
The stock market is one thing, but Bitcoin is not 100% a stock, it's a type of currency, it has fees, it needs to be accepted by 2 parties, it's a whole different concept.
By the way no one really knows what's going to happen with the stock market - will it go up forever? probably not.