Why a damaged ship's crew might salvage a derelict station

Should a damaged spaceship crew settle a derelict station or salvage it and leave?

Salvaging useful material is safer because the crew knows its own ship but cannot count on the station's supplies or know why it was abandoned.

The crew knows the damaged ship it has been operating. It cannot assume that an abandoned station has food, air or other consumables. Nor does it know what made the station empty. Taking useful material and departing is therefore the preferred option, rather than making the station a new home.