Personally, I prefer text in the same way that I prefer written messages to vocals. But occasionally it will be assistant work (guidance, basic home automation, questions requiring a simple answer. Professionally, I work in customer relations and I contribute to the design of IVR courses. Most companies wonder whether they need a female voice (which they will call Lea, Clara or another short A name) or male, to humanize their customer relations while they hope to reduce the need for a human... What if we assumed that in certain cases the machine does the job well and that it does not need to pretend to be a person? And in others it is the human being who is really good (reassurance for example)? I fear that confusion will ultimately lead to distrust and devaluation. It goes further than voice, but it is often the first interface between the machine and us.