If you look at the lifetime growth of Bitcoin, it should be worth $1,000 to $2,000 USD. The lifetime tangent is offset by the "bubble" that began in late May of 2017, so the numbers have to be adjusted to either account for a "parabolic" curve or for a new tangent with deviations.

The Spike to $20,000 was a significant deviation driven by emotional investing and a flood of new interest into the Bitcoin market. Since Bitcoin is still not well understood, the natural market correction brings Bitcoin down to the $10,000 range. As it stands currently, Bitcoin is a good investment at $10,000 and an excellent investment at $8,000 or less.

That said, Bitcoin is an unregulated asset with no real value other than it's agreed on price so it could crash or soar at the drop of a hat.