A mechanical or body-powered arm is typically the most rugged alternative available and is often best suited for use in dusty environments such as foundries, or in wet environments which can damage electrical connections. Some people really like its simplicity, reliability, and the ruggedness. Most people who choose to live without using a prosthesis are able to become fully independent, sometimes with the aid of special adaptive equipment at home. A well-trained occupational therapist can be very helpful in teaching people how to solve such problems of everyday living. You don't need an electronic arm to make everything easier.
ALL prostheses require effort by the wearer.
Because it is the most sophisticated, the electronic arm sometimes requires the most initial effort to learn the proper control sequence. The amputee may need to practice subtle movements again and again until they can be performed without concentrating. ALL prostheses require learning how to put them on, secure them, and take them off. People who make a strong and sustained effort to use all the capabilities of a prosthesis are usually the most satisfied wearers. If financial considerations, transportation difficulties, or a remote residence make follow-up difficult, prostheses with moving parts are usually not the best choice.