It is in fact very, very hard, when your entire country is planned around the automobile. You're talking about building infrastructure that doesn't exist, and replanning every single town.
When I lived in Chicago, I drove once a week, for groceries, because I lived in a food desert. Otherwise I rode my bicycle (yes, in the winter too). That's not even remotely practical now, because I live in a very rural area.
Again: don't let perfect be the enemy of better.