Don Durito
Hero
And it is of course more likely to happen to a Fighter making multiple attacks a round, then to the wizard who can sit back and make his enemies make the dice rolls.A natural 1 is one point less than a natural 2, no more and no less. It is absolutely not an indication of any sort of crazy shenanigans that could otherwise never happen. That would be ascribing far too much weight to random chance, and away from things that should matter, like the choices we make while creating the character and playing the game.
There's a reason why critical fumbles aren't in the rule book. A narrative where something crazy happens 5% of the time would quickly turn into a joke.
I feel there's a place for critical fumbles, but only for exceptional circumstances. For me, in 5E, they only become possible when a character has at least one level of exhaustion and only for ability checks, not saving throws or attack rolls.