I've never thought about that, I see them both as predators but I really do not like wasps. At the same time I generally find wasps more aggressive and they do tend to fly faster and spin around you in circles, very intimidating compared to a bee.
Every creature has its place in the ecology of the planet. Bees I believe are important as they are the ones that produce food for us by pollinating a lot of the world. Yes wasps are important too but man can not use their nests as a source of food like bees therefore they are despised more and killed easier as people do not feel they contribute food for them.