You won't blame them if they say fiat is better than cryptocurrency. As a matter of fact, fiat for now still has several advantages over cryptocurrency. One, fiat has no transaction charge if you are transacting face to face, however, cryptocurrency always have toansaction charges whether you are transacting face to face or not. Fiat have insurances that insure their money, but Bitcoin and alt coins don't seem to have any such things. Fiat is can be used by a common market man or woman who knows nothing about the Internet but Bitcoin and other alt coins can. If Bitcoin and Blockchain can rectify these issues, then it will get more accepted.