I think a lot of what people get wrong in these predictions is the social element. Dad's telecommuting to work in the study and smoking Lucky Strikes while Mom - aproned and barefoot - cooks in the kitchen, that sort of thing.

What this misses - aside from the basic incorrectness itself - is that shifts in social perception and overall conscientiousness are major drivers of innovation. So, look at the intersection of what's feasible (with improvements in materials, design, miniaturization, understanding of the human body, etc) and what's wanted (convenience in daily life, improvement of self-image, etc) and you can get things like e-cigarettes, self-driving cars, boner pills, hair loss treatment, yadda yadda.