I personally do not have the need for an assistant nor did I ever felt it. So probably I am biased when I say that AI isn't a necessity, but a bubble (both economical and procedural).
Your last point is a great point actually, but I don't see many people waking up when there's a metaphorical bed ready for them. And whether we like to think we are individualists, society plays an important role in our life. And a zombie society isn't desirable in my opinion.