bhai technology isn't like characters in hindi serials i.e. Either black (evil) or white (saint-like). Depending on where and how you want to use each will have its own advantages. Sturdiness for example has never been the forte for electronic devices, while low maintenance isn't something you associate with DC motor. you have to consider which of the availablee technology is good and suits your need, which is why component engineer exist.
As for your declaration, i take no responsibility for you being bevakoof :p