Sometimes I cannot buy legitimate stuff without them. Just today, I bought some books for which US credit/debit cards refused to work. And I see that every week.
I usually don't go out of my way to pay with bitcoin, but recently needed to buy a PSN prepaid card and every website I tried either declined my 2 credit cards and paypal outright or requested some ridiculous verification (record myself on camera holding a passport to my face? To buy a $10 prepaid card? No thanks)
In the end I stumbled upon a shop that accepted bitcoin and got my PSN card in the time it took to get one network confirmation.
In the end I stumbled upon a shop that accepted bitcoin and got my PSN card in the time it took to get one network confirmation.