People hating having to scrape their car in the morning doesn't help them getting a parking spot closer to their work place or their home.

If they had a garage next to their house to park their car they wouldn't need either. However there are lots of situations where the car isn't close yet it need pre heating. For me this is driving the car to and from work in the winter, and certain one off situations (going home from the hospital, picking up the car after avriving at the train station).