I have no problems seeing a bright future for BTC, but after a major retracement it might again take many years to recover. Look at the last sell off down to $3700. It took almost 4 years to make new ATH.
So should this be the major, expected drop, it could again take many years for BTC to reach 100k.
Many people will be dead before BTC will reach 1 mio.
Kinda hard actually to predict or know the timing to sell your bitcoin and most of the time only a few people are lucky enough to make a great timing and sell at the peak of the market.
In my opinion, having a big drop at this moment in the market of bitcoin is unlikely to happen because of the market manipulations and giant companies that are getting interested and using bitcoin.
I think what could happen is it gonna pump in a big price like 100k$-150k$ and then will go drop big time, if I think about the giant companies that are holding it is almost impossible to expect a drop if they don't sell, companies are just buying and buying bitcoin at this moment and probably will sell in the future.