Likely a design choice that stems from how humans react to the voices of each gender. Female voices are generally better for voice communications which convey d

Likely a design choice that stems from how humans react to the voices of each gender. Female voices are generally better for voice communications which convey details, information, and other non-commands. Male voices are generally used to communicate from a sense of authority. Take for instance the NYC subway system. The female voice announces the stop the train has just arrived at, while the male voice instructs customers to 'stand clear of the closing doors' and to 'be aware of pickpockets, take care to ensure the safety of your personal property.' This is quite intentional. We simply react better when certain types of voices are used to convey certain things. Source: former audiobook, VO, and podcast casting director.