In order for you to sell your BTC for fiat cash, another trader needs to be on the other end of that deal and be willing to buy your BTC in exchange for their fiat cash.
So as long as someone is willing to buy your Bitcoin for cash, it'll have a dollar value. Now, if everyone only wanted to sell Bitcoin, and nobody wanted to buy it, it would be worth $0.
You seem to be somewhat confused about how currency markets, specifically for Bitcoin work, so I'm going to breakdown how a payment service using Bitcoin works for using your example.
You have a shop that sells an item, let's say a basket, for $500.
On Monday, 1 BTC = $100. The customer places an order on Monday, and you generate an invoice based on that ...
It probably means the price drops and eventually the exchange suspends trading of BTC.
Nit pick: BTC is cash. You can't convert cash into cash but you can exchange cash in one currency for cash in another currency.
Why do they not want to add this feature?
There is no "they". You can create issues or open pull requests to see feedback about a feature request from others.
Few reasons I would not want such feature in a bitcoin wallet:
Bitcoin Core wallet is an open source bitcoin wallet which is used by people from different countries with their fiat ...
TLDR: The price of bitcoin determines how many miners are mining, not the other way around.
Your last paragraph is on point! After a block halving, every miner unprofitable at the new reward will stop mining. They will stop mining because they need to pay for the electricity they burn. But for each miner that stops mining, the remaining miners become more ...
It's possible to get your price equation via their API:
As well as the price at which each of the trades are locked in at:
It should be possible to write a script to scrape this data and calculate the btc_in_usd value using this.
(I'm sure this information is available ...
It's a combination of the low trade volume, and also because the traders on Bisq know that some people will pay a premium in order to avoid having to complete KYC requirements to do their trades.
If you signed up for an centralized exchange, you'll be able to buy at the market rate (minus a fee), but the trade-off is having to complete KYC requirements.