Well, it's kind of a sad story.. on my part and my brothers part. He's a big tech nerd.. well was, frequent IRC user and followed a few channels that were dealing with bitcoin at the time.

It was a bright sunny morning sometime in the year 2011.. he came to me and told me about this thing called "Bitcoin".. He's like man you should really check this out and buy some it's only a dollar.. there is something about this.... me at this time, I was into playing video games and getting high.. I could care less about technology or anything else besides playing a game not what it's made up of. I basically told him it sounds pretty stupid and that I was not interested.

Now look at December of 2017... I could have been retired living on a beach. The real sad thing is, he didn't even buy any when it was 1 dollar after telling me to look into and buy it... Oh well, live and learn I guess.

I have indeed experienced a tremendous regret, it was all because at that time I sold my bitcoin cheaply and suddenly the price jumped very high with a fast time.

My biggest regrets in my life everyday is not to focus my daily activity of crypto currency specially in bitcoin because I have a responsibility being as a regular employee sometimes i forgot to visit my account and also my investment in bitcoin ans some other activity like being as a member of signature bounty campaign but i pursue my self to be active for the sake of my family.

who regrets about bitcoin is almost like you because I think today if using advanced technology if investment cannot be used, we will lose even though bitcoin is quite high.

It was unfortunately last year when I sold most of my bitcoins just before the rise in price. I wished I waited for a little more...I still regret :-(

sell it when the price drops and it turns out two days later the price soared, huh this is very very sorry 

The highest regret I made in bitcoin is when i invest less on bitcoin and the Prince increase to 20000$

OMG! this question makes me remorse! about Bitcoin, I invested when Bitcoin was $17K but present at $6,300 what a loss so excruciating. I should have invested when it was 6,300 and the price surge to 19k, that would have been better. But all in all I hope the price increases and the total market cap attained more than $1trillion.

It was when I am not yet interested on it three years ago and I always regret it. My cousins got a lot of it now but I have none and trying to earn or gain now. That was maybe my biggest bitcoin regret and maybe the biggest opportunity that might change my whole life, a life-changer.

honestly i have e regret in bitcoin back to the last time bitcoin's price drop, and im not buy some bitcoin.