yes, anyone who has had a lot of bitcoin in the past, would be surprised to see the current bitcoin prices, even some of them regret for not holding back the bitcoin they have. if they hold 10 btc to date, I think they have become millionaires.
Yes it is true, and it happened to me. I know about bitcoin when it costs about $ 300, and I never think about keeping it in the long run. "regret", that's what I feel right now. I treat bitcoin like a normal digital currency and will not have a future, but it turns out I misjudged it.