In the Futurama episode, Lethal Inspection, it's revealed that Bender has a defect where he lacks the ability to upload himself to backup bodies in the case of his body being destroyed. But in Ghost in the Machines, Bender dies and becomes a ghost. He finds he can possess electrical objects while he's a ghost. So why the concern over the lack of backup units, if he's still basically immortal?
In 'The Ghost in the Machines', the Robot Devil says that Bender is only a ghost because he committed suicide, thus being stuck in robot limbo.
If he were to die normally it can be assumed that instead of ending up as a ghost in robot limbo he would end up in Robot Heaven or Robot Hell (he goes to both in that episode).