I wondered if a website only accepted bitcoins or any cryptocurrency as The only payment method. For sure, I guess we find those websites on the dark web but are there also some of them on the internet?
I am sure that if you only accept bitcoins then you will miss a whole lot of sales. At a minimum, you should have PayPal and preferably also a short processor like Stripe or 2co. Of course, it depends on what kind of business you run.
I tried with a luxury rental properties website.
Not a success at all until I add card processing.
I think it is not so well known from the end customers and it depends of the product.
I would not refuse to accept crypto from my customers and have it as an integrated part on almost all businesses I offer online. People are getting more and more used to it and for that reason they will rather pay with crypto than credit card soon.