Yeah it's good for a bitcoiner to accept bitcoin in his or her private business but it's good for the person who's willing to pay with Bitcoin to have a good knowledge on how to send Bitcoin so that he or she won't sent to a wrong address. For a private business owner to accept Bitcoin in his business it means that the person knows the importance of crypto currency and he also wants to spread the adoption of Bitcoin in his locality, there is no hidden transaction in Bitcoin because everything transactions with Bitcoin is transparent.
There are ways we can make it easy for our customers to send us Bitcoin if we are accepting it for our businesses without making a mistake. They can scan our address from barcode that we paste around our office. When we scan we are not copying and pasting the address that will make us to make mistakes. Scanning is the best way to get an address but we have to be careful too because scammers can replace the business address with their own address without our knowledge. I have not use Bitcoin to repair my car before because I do not have a car and I do not think we have such service available in my country yet but when it gets available and I have gotten my first car, I I'll not mind using it because I love spending Bitcoin like other currency.