This may be the ideal one to think. But sometimes, we don't know what will happen to us. not everyone is a holder or long-term investor. SO, we cannot be sure enough that we will not sell our BTC. Sometimes, we need money to cash out also r take profits. But yes, 1BTC=1BTC
It doesn't mean you cannot be. We've all started somewhere!
If you need money to cash out, it means you've invested too much. This is a problem of many people who get too greedy. They have 10k in the bank, they invest it all and the price goes down and they get stuck in this greed not wanting to take a loss and at the same time begging family and friends for some money to pay the bills.
I'm heavily invested, probably 90% of all my money is in bitcoin, but that 10% that I have lying around is enough to survive another 2 years if I need to. I won't be able to buy myself nice things, but I won't be going into debt either.