LogFAQs > #926642420

Wasps aren't that bad as long as you don't fuck with their nest. I don't think I've ever been attacked by one. There are other species I think some type of hornets that are aggressive however.
https://www.landcareresearch.co.nz/science/plants-animals-fungi/animals/invertebrates/invasive-invertebrates/wasps/faq
Why do wasps sting people?

Unprovoked wasp attacks are very rare, a wasp will normally only use its sting to defend itself or to subdue prey. Many wasps stings are the result of people squashing wasps, either deliberately or by accident. Wasps are attracted to food (especially fish sandwiches) and sweet drinks. People have been stung while they are eating because they have not seen the wasp that is also sharing the food. Or, in the case of drinks, they have not seen a wasp enter their drink container and are stung as they take a drink by a wasp who wants to escape being swallowed. Wasps also sting intruders to defend their nest. When a wasp nest is disturbed, wasps will fly out with a wing beat frequency that stimulates other wasps to fly out the nest and attack. They will attack an intruder within 7 metres of the nest and pay special attention to moving targets.