I guess we should stop learning to walk because we have cars now.
Oh wait - what happens when things change, like there is a war, or an economic depression - and the electric grid goes down - and we can't charge our laptops - or even buy one?
I commuted into Washington DC for a year and it was hell. The noise, and just walking on the sidewalk was stressful, with the traffic and congestion and all the drivers in a horrible mood because of it. And when using the metro (subway), I would have to deal with sleet and snow and rain and walking long distances from the metro stop to my destination, avoiding cars and buses and horrible weather, usually with the stress of being on the verge of being late because commuting took such a large chunk of my day.
Today I have a really nice house on a lake in a suburb. I could not have a home like this in a city - it would cost tens of millions of dollars. I can walk to the store if I choose (or kayak there), as well as kayak on the lake for exercise (which I do several times a week), and bicycle on a nearby path with no cars and lots of quiet and beautiful scenery. And nowadays I have a very pleasant 20 minute commute to my job in a suburban office - on the ground floor with windows and my car parked right outside instead of me tucked away up in some high rise prison.
Why anyone would want to live or work in a city mystifies me.