I don't understand it either. I have friends that invest in crypto currency who have tried to explain to me how this works, but it just doesn't make sense to me.
If I owned a business, why should I accept Bitcoin for goods or services that my business provides? What's the advantage to that versus accepting traditional, well established forms of currency?
There are crypto gateways that will instantly settle the crypto in USD, straight to your merchant bank. You don't have to touch crypto to accept it, in the same way that you might offer a third party buy-now-pay-later option, where some other company finances the purchase, but gives you the funds immediately while they service the loan.
The funds settle to your bank, and unlike card schemes, there's no fraud or chargebacks. Payment processing for crypto is cheaper too because there's no counterparty risk.
The reason you WOULD accept it is the same reason you would accept any alternative payment method; you're giving your customers more options to pay.
You know about stocks, right? You buy and sell them when you want at the market price to convert them to dollars. Except that the stock market is only open during banking hours (basically), and stocks are only listed on a few exchanges. With cryptocurrency the markets are open 24/7 and major crypto like bitcoin is on hundreds or thousands of exchanges. It isn’t difficult. Just open an account with a crypto exchange, link it to your checking account to fund it just like you would with a stock brokerage, and trade for whatever you want.
The advantage is that you could put it on a cold storage device and avoid the appearance of ownership and never pay taxes on an asset that grows fast than the Fed’s QE printing press.