It’s not like trash mobs are even hard, but it just makes the grind more annoying every time a monster has 1 more hit to die and it just runs away. Mobs fleeing serves NO purpose other than to just piss you off.
This game is about grind, so the grind should be fun. Having monsters skitter away from you when you’re about to deal the killing blow isn’t fun, it’s annoying and tedious, having to chase it across the room just to kill it.