We have been told many times to invest only funds which you can afford to lose in bitcoins. But the question is that most of us do not have that extra funds to invest. So, what we do is we buy bitcoins from our savings, and from whatever money we get, we try to buy bitcoins. Middle class people do not have that EXTRA money WHICH THEY CAN"T AFFORD TO LOSE.
Yes, i invest in bitcoins but it is not EXTRA money and I am afraid I can't afford to lose. Do you have that EXTRA money that you can afford to lose
You spoke the reality of many of us, several of us don't have extra money talk more of having one we can afford to lose, many of us are buying bitcoin with our savings(like you said) and hoping we don't lose it, but rather, make some profit on it.
But there is another context to this analogy which maybe you forgot to mention or you don't realize,
To buy Bitcoin with extra money one can afford to lose does not necessarily mean just as it is said, it also means that one should only buy Bitcoin with money they won't be making use of in the near future, this is because buying bitcoin with hopes of making profit on it is a long term investment, it could take a month, two or more or even years to see a tangible profit on the initial amount you bought bitcoin with.
So it makes no sense buying bitcoin today, and tomorrow, you sell it because you need the money to attend to another urgent matter that seem more important, so this is why it is advised to only buy Bitcoin with money one can afford to lose, which in other words means to buy Bitcoin with money you won't be needing or making use of at a significant long period of time.