Between what I want and what , will be there will be so many differences that many will not adapt to it.
Then I will describe my acceptable.
Everyone would have a simple or even minimalist accommodation where yet all the comforts would be made to make life pleasant and eco-no-logical: Reversible passive heating, decorative aquaponics (decoration and food at the same time while sanitizing the air), solar and wind would be used in the best way, the waste will all be infinitely recyclable.
The world will better manage its resources and even pollutants will be recyclable.
One would have the choice between private or common vehicle but at most autonomous and which would be activated according to a controlled flow at least in agglomeration.
Many functions will be robotized and gradually the worker will be replaced.
In the long run, it would no longer be necessary to have a positive birth rate, just replacement.
Wars could become a framed sport with no casualties, no injuries other than ego.
The holidays will be in the virtual rather than in the space ... I do not like the trips except those that I make in my head or in my garden.