Double Garages, why are they never used for cars?

[Beaaware]

Several of my neighbours have double garages and at least 2 cars per household, but they never put their cars in their garages instead they take up other neighbours car spaces in the road? I think this is very selfish of them when they have more than their fair share of garage space than most of us.

We converted our double garage into a two bedroomed flat (which required a small extension at the back but 80% of the flat went into the garage. We have a big driveway. It was full of crap. Now it's worth £180K on it's own.

YABU and a bit daft.

Do you also object to people taking up the pavement when they walk the dog?