@Garebo, I’ve seen a wasp’s ability to sting multiple times up close. My son got a wasp down his shirt as a toddler and it stung him six times. :( Unlike bee stingers, which are barbed, wasps have smooth stingers that don’t get stuck in your skin.
Some types of wasps, like yellow jackets, play a role in pollination. Not nearly so much as bees, although in some parts of the world there are wasps that are important for the pollination of figs. And, as has already been stated, wasps do help control pests.
Read up on wasps, especially those that lay their eggs on live caterpillars or spiders. The “purpose” of these wasps may be to make you so happy that you aren’t a caterpillar or spider.
And, some of them build cool nests, like the pipe organ mud dauber wasp. The female “sings” while adding mud to the nest, using her wings to dry it. Each cell of the “pipe” contains a paralyzed spider. She lays an egg on the spider, seals it up, and when the larva hatches it eats the spider alive. We have a few of these right outside our front door. It’s amazing to watch them build the nests, and they’ve never bothered us.