Interesting take.
However, you cant say your green because your taking a second hand car and hence not responsible for any of the carbon.
That would be valid had you saved a car that would have been scrapped but not one where the normal ownership model is for people who buy new cars to generally pass them on and buy a new one. The selling on is part of the expected model since they have a fairly predictable value.
Say all the people who buy new cars stopped. What would you do then, either keep a decaying old one going, or buy a new one basically.
Your really not the target market yet. Your above average mileage, and no home charging. so two of the factors that lead to not yet you tick. One isn't too bad, but both mean not yet for you.
Sooner or later normal supply and demand will have to kick in to Ev prices, simply the amount moving onto the road will satiate that demand and prices will adjust.
I suspect your going to see lower depreciation of course since the cars are far more likely to have a longer lifespan than ICE.
What your also missing is the maintenance and depreciation, whats normally referred to as cost of life. IE the total cost of running X vs Y over a period, taking into account all the costs from purchase to running.
Right now the EV one is being heavily influenced by the electricity price. In comparison diesel is quite low in cost for fuel.
12 months ago no one was saying Evs were expensive to run, even with public charging because they weren't. I am sure over time thats going to fix itself to some extent, competition, and also obviously the elec to gas price tether, and the fact the high price of gas is pushing more and more sustainable energy development.