I don’t understand why someone that does not live here all year

Wildwood - I don’t understand why someone that does not live here all year puts one of their cars in the street and leaves it there when they go home. They have an empty 2 car driveway all winter. We only have 6 parking spots on the block. They leave it there all summer too. In the summer it’s worse when 2 other families do the same thing and leaves the block with only 3 parking spots.