Iron Golems killing zombie villagers

This is not a bug what so ever, but the game mechanic which allows iron golems to kill zombie villagers, even when they're in the process of being healed is annoying as hell, if a player is at the point of healing zombie villagers, they probably wouldn't need the added protection from the iron golem for one zombie villager, so it is simply a nuisance of a game mechanic which imo should be changed