I'm very much for EVs instead of fossil cars, but the argument that you don't need fast charging because you can charge it while at work or while shopping doesn't stand.
Increasing cost of a parking space 1000 times for extra convenience is not economically feasible. The environmental implications are obious, it simply can't scale, no need to show any math (you made up your numbers first, I don't have anything to compare it to).
This is 'batteries pollute the environment too" FUD all over again.