The way you write this, it sounds completely over the top, but it isn't.
As long as I had my own place I did exactly this. I had no car, I bought fresh food, I recycled, and I used my feet for getting from one place to the next (up to 40km a day - and yes, by foot)
When I was with room-mates I still recycled and went all by foot.
Where I am now, there is weirdly enough no way to recycle but we buy stuff that is made local and cook fresh at home.
And for the plastic stuff: Why not buy things packed in plastic boxes or other stuff? You can use most things instead of throwing them into the garbage. Clean them after they are empty and use them until they break. For example icecream boxes are great to store food in the fridge. The glasses from pickles are great for home made jam.
So I for my part, always do what I can. But anyway I am a sinner

I use a computer and a fridge instead of a typewriter and a basement filled with ice.
cu ingame
Leela