In general? Sure. But we're not talking about in general. We're talking about a specific scenario where (I feel) the DM was too strict. The DM could have laughed it off and warned about the importance of paying attention to your hands in the future. Instead he took a hard line with the rules then and there, spent some of his goodwill, and gained nothing in return.How about "Makes combat more interesting"?
Because I think the hand rules (and also the somatic/material rules) add to the strategy. You have to strategically decide who carries the torch. For me that clearly makes it more interesting.