True, but we can't blame those who can't take the risk because not all people could take such a risk, maybe because of their situation and they can't afford to lose money and risk the money that they have or hard earned, but based on OP's story or situation, I think he has the ability to risk or invest in bitcoin early, but because his brother doesn't agree, it hinders his decision and later on causes regret. I don't know why OP doesn't choose to invest on his own, maybe because of a lack of confidence and too much worrying because on his own, maybe because of a lack of confidence and too much worrying because in the early years of bitcoin, not all are familiar with it, and there is still a fear of losing money in bitcoin.

truly it is regretful in the side of OP but even not OP can still invest in bitcoin, OP might not be able to experience the golden times of bitcoin but even now bitcoin is doing miracle and still showing a lot of good movement in price, you just need to be good at analysing the market and widening your understanding about bitcoin.

Yes every investing has thier own risk and we can not say that every time we invest we got a good profit but in the reality it will matters on our realization cause the more we analyze the project if it can have a chance to grow then we got a profit but if the project didn't have enough time to grow and it will loss then your investment will loss too. So we need to be careful cause when we take some risk then there's a chance that our money will gone but if we are too lucky then pur money will grow.

Perhaps regrets only means you now know the difference, you have learnt your lesson then hard way which means you lost a clear opportunity which your were aware of but was too afraid to take a bold step instead waited for your brother to take the step before you do.

Investment you don't seek validation from anyone except your risk management. All you have to do is take risk when you are convinced of doing something do it will you your heart, assuming you took the step alone by buying with the amount you had you would have been in a lot of profit far from what you expected. I believe it's because you have low knowledge of bitcoin which made you feel reluctant in investing but now you have learnt it's time to make things right you still can buy now and from this you will always make us of opportunities.

Risk should indeed be taken by gaining a comprehensive knowledge of cryptocurrency and risk management. Otherwise, you will have to return disappointed. There is no point in taking risks without having a good idea about the investment. So one has to take the risk of investing by gaining sufficient knowledge about this volatile and unpredictable cryptocurrency market and acquiring skills through internship under a good mentor.

There were three different times where the price of Bitcoin was very low but you failed to invest. Since the cryptocurrency sector is very risky, in this sector I think looking for an investment partner is one of the biggest mistakes. Since you realized that Bitcoin would go up in value, you should have invested your own money instead of deciding to go into a 50/50 partnership with one of your brothers, and you could have enjoyed the time when bitcoin got to $74k. It is not right to keep money in the same wallet for both, it is not right to share the wallet between the two, because if the wallet is shared between the two, it is more likely to leak. However I think you shouldn't regret it if you want to invest now personally you can start because Bitcoin is going to leave $100k in the near future.

Yes, OP shouldn't have regrets, no use thinking about what happened in the past, focus on the present now. OP if you want to invest you can still invest, there is still plenty of time to invest. Because Bitcoin will not stop here and will grow much more in the future. Many have speculated that Bitcoin may surpass 100k in the upcoming bull run. So if you invest now and hold for a long time, you can earn much more profit.

Nothing good can be achieved without taking risks. If you want to achieve something good in life, you must invest somewhere and in that investment there must be risk, because there is no investment without risk. Moreover, the place where the risk is more will give you more return, more risk is more profit, less risk is less profit. Now its totally up to you whether you will earn more with more risk, or less money with less risk. Nothing will give you 100% guaranteed profit without risk, you must take more or less risk.

even though taking risk is a step to success, when taking the risks you need to have knowledge before you can go into the risk, if not no matter the higher risks that you will take you will still face the lost. That is why, even though we know that everything in life deals with risk, including life itself, we have to have knowledge; if not, we will continue to lose in the risk.

There is something that you need to understand in the OP context. He has a bit of knowledge that is not enough, which is why he thinks that you need to acquire a whole lot of bitcoin, which, if he had known, he would go and buy with the least amount that he has, and again, you will also invest what he knows he will be capable of losing because that is just the fact that you can be fully guaranteed that in every investment you will succeed. That is why it has been called a risk, which is also applicable to our daily life routine.

Exactly, it is not at all possible to progress on the development path with limited knowledge in every work of life. There is a proverb in my country about this - "Little knowledge is dangerous". Another very useful thing you said is quantify the potential damage of a job. Determining that means half the work is done. Even after that there may be mistakes and may fail. There is nothing to despair because as our another proverb says – “Failure is the key to success”.

I see no problem taking risk, everything is risky in this life from us living our homes down to our work place and in every hour of our day, it's been part of living. Risk taking while regarding to investment is a must, risk takers are always said to be high level earners only that a few times we do take on risks that are not worth our efforts. Regardless, in every risk taking it is either we fail or succeed, it's no longer called risk if we can already detect the outcome of the action.