Would I have sold it before 50k? yes, yes I would.
Can I accurately predict what someone would pay me for it tomorrow? No. Can I estimate the amount it will return to me in 10 years through dividends, or earnings growth, or repurchases (or in BTC's case, lost wallets)? No. Is there regulation protecting my investment? Not really.
It is a purely speculative investment.
If you want to go find my laptop, it's in a landfill in Massachusetts somewhere. Have at it! It was an early macbook. It has a Daft Punk sticker I bought at Newbury Comics.
Value is NOT price. BTC objectively has no little to no value. Price, sure, it's all over the place.
What is the par value of a BTC? What's the earnings yield on it? ROIC? ROE? How is it providing jobs to people (beyond speculators)? It is (objectively) a drag on society and progress.
No thank you.