First reason: Bitcoin price is now clearly overvalued relative the level determined by its public acceptance rate (if 100% acceptance rate means ca one million usd, then nowadays acceptance rate is not clearly 10% but rather something around 1%).
Bitcoin is indeed overvalued, but I think it won't fall below 30k, thus the bottom may not reach $10k as you stated on the title. Besides, many institutions are now acquiring Bitcoin for long-term holding.
Second reason: if the economic crises will emerge, then Bitcoin falls much more than major stock indexes (just as during corona crises March 2020).
If an economic crisis emerges and the value of fiat currency plummet I believe people will convert their currency to Bitcoin to preserve its value. With funds flowing into Bitcoin I think this will be the time when the golden years of Bitcoin will happen. We can possibly see the price of Bitcoin increase to an imaginable height.