Look, we all know safety glasses are important any time you are using any power tool. It just makes sense. Still, it's helpful every now and then to have a good example of how important, preferably one where everyone gets out OK.
This image, posted to Reddit by is a perfect example. There's , but the image pretty much speaks for itself: these safety glasses saved this lucky (and prudent!) man's eye by stopping a shard of a shattering angle grinder disc that was headed for pretty much the worst possible place.
At least, the worst possible place if you aren't wearing glasses. But when you are, it's actually pretty good luck. Always remember your goggles, folks.