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In today's bitcoin, we know that if you invest with your spare money you may never make any fortune from bitcoin.
You see, this is the opinion of the majority of those who want to buy Bitcoin, they do it exclusively for profit, not for the reason why Bitcoin exists. I don't know how all these people are supposed to get rich if Bitcoin doesn't fulfill its primary function.
~snip~
Who has ever lost in bitcoin? I do not find this advice pleasant to bitcoin. Although, this is a kind of general advice for assets that are volatile.
Many lost, some less, some more - but not only in the way you imagine. It's not just volatility and the wrong decision when to buy and when to sell, but also countless scams, hacks, forgotten passwords or thrown hard disks and the like. Therefore, people should be warned about all these dangers and risks even today, although it will seem unnecessary to some, I think it's much worse to pretend that such things don't happen.
3. DYOR (Do your own research):
This advice should be for altcoin investors. If I may ask, what kind of research is one, especially a newbie expected to make in bitcoin. Are they researching the road map of bitcoin or are they researching the developers behind it? The right thing is to know when to buy. Simply buy low and sell high.
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Someone can research as much as they want, but there are so many lies and deceptions in all of this that you have to be a great expert to find out what is true and what is a lie. The facts are that less than 5% of those who trade cryptocurrencies make a profit, everyone else mostly loses.