Yes it's been discussed time and again. There are some who are lazy, and some who park like tw4ts, but for all the others there may still be valid reasons (not excuses) as to why a car is needed. It shouldn't be car or walk/bike. There should be other alternatives like buses. But in my area whenever I wanted to take a bus to work, it was always full of school kids and the bus didn't even stop becasue there were no seats left. Secondly it was a 1 hour 05min trip on the bus, at £5 a go, and the only one I could catch was the 8.05 (and be late) or the 7.05 (and have to wait at the door for an hour). Hardly a flexible option if you've got other commitments. So I chose to sit in traffic for 30 mins in the car (which lots of others do) and then for a year I cycled and showered which was 1 hour door to door, but the danger aspect put me off.
My colleague had to be in for 9am sharp, and had to pay £74/month for a bus pass and was often late because the bus didn't show, or was 20mins late. He ended up passing his test and getting a car as it was the only reliable option. And this is in the city of Plymouth where things are supposed to be metropolitan and efficient.
So it all boils down to, money is needed to make things better but no councils have any that they want to commit to infrastructure and improvement.