Architects and planners will realize that steps are too narrow and steep, cupboards too high, fluorescent lights too bright for people with glaucoma. We will have smart clothes that respond to body temperature. We will have multiple careers, separated by long sabbaticals. We'll have the time and resources to reverse past failures or build on past victories. The notion that wisdom is a trait of aging is as old as Methuselah.
Most cultures believe the capacity for wisdom increases with age.
Some believe it is only possible with age. This assumes that the ideal of living longer involves more than the accumulation of wealth or the racking up of years for their own sake. If longevity has quality, we could become a nation of gurus. Mountaintops would be prime real estate. It's not simple accumulated knowledge.