In a company I worked for, systems were brought to their knees because of a while loop that went infinite under poorly tested conditions. There was a meeting and the head of the dev team came down to tell us that, in the meeting, it was decided that we should not use iteration any more because it runs the risk of going infinite. Instead, we should use recursion for all our looping needs.

That was in a C# shop so of course the "decision" was never implemented. My guess is that this was a completely mad decision taken by non-technical managers in a moment of panic, who had pressed our tech lead a bit too much on why software breaks and what can be done to avoid it breaking- and then latched on to some off-hand comment about recursion being an alternative to iteration, and ran with it.