*SO* Not Reassuring

Why is it that every time a manager tells me "all your jobs are safe" I think "time to start looking for a new gig"? Even if a manager is trying to allay anxieties that are stemming from something that is well and truly innocuous, it just tingles your spidey-senses all the more. I mean, historically, such "assurances" invariably act as precursors to negative employment actions. Personally, if there's nothing to fear, said managers should just keep quiet. Offering such reassurances just makes the more career-experienced individuals start looking for new work in earnest.