It is a fact which shows that since we have known Bitcoin, if we had bought or saved and haven't sold what we had bought and sold, we would have a lot of Bitcoin by now but unfortunately, man does not know what is going to happen in the future, how much something is going to be worth, if it is known then everyone should keep their things until that time until they become very valuable as Bitcoin has become.
When I started working online, online fee payments were made in bitcoins, and since then, if I had saved, I would have had eighteen bitcoins or maybe more, but since I didn't have any idea how much Bitcoin would be worth in the future, I used to convert my assets to fiat and spend them whenever I needed which is what someone would normally do.
We've all been there, wondering what if? about decisions in hindsight. The truth is none of us have a crystal ball to see where prices might go. For all we know, Bitcoin's value might have ended up crashing (unlikely).
At the end of the day all any of us can do is make the best decisions we can with the information we have at the time and i try not to dwell on the past or beat yourself up over it. You took a reasonable action back then that made sense given your situation. Sure you think about what could've happened, but that kind of speculation doesn't really get you anywhere. But you also know playing it safe isnt always a bad call either. It's about finding the right balance for your own needs.