I know it, yet I keep making the same mistake.
I have my vision of the future; it's obviously a partial one, but I know it is a plausible one. And yet I keep trying to talk to friends who are not technologists and I try to explain to them this vision; it takes a lot of time and effort, but at the end of the day they are not convinced :-(
So why do I do it? Maybe because I need to be reassured that the vision is correct, but I keep looking in the wrong direction, probably.
This blog post explains how hard it is to describe the future; Stross goes back 30 years and tries to explain WOW to someone back then.
And technology is accelerating! Making it impossible to imagine the future, let alone describing it.