What's the point of wasps?

Many times we had wondered why these tiny, annoying, stinging insect even exists.
They don't produce anything like their relatives the honeybee. However, they have an extremely environmental role, as scientist says.

 
It important to say that the wasps, have differet social types, first of all, we have the egg-laying queen, then the workers, and the ones that bother us are the "social" ones.

Social wasps are predators, and control the numbers of potential pests, such as caterpillars and greenfly. They are estimated to consume abount 14 million kilograms of insects per year. They are very useful.

Other vital environmental role is that wasps are valuable pollinators, they love sweet liquids mainly the nectar of flowers. This is the reason that why wasps buzz around our heads while we are having lunch in a summer afternoon.

Many studies are being made to find out more details on how thet live , how common they are and how the environmental changes affect them.

To conclude, the world without wasps would be a world with a large number of insect pests that would invade our crops and gardens. Wasps as many other insects have an important role in the world.