Unlike pliers or wire cutters, there are times when you can get the job done without them.
But your eyesight is very important. If you read the labels on your wire snips and other tools, you will see them recommended, to protect you from flying wire ends.
They are so important. If you don’t have them, consider getting a pair of safety glasses. If you wear corrective glasses, they will fit right on top of those. The first time a clipped piece of wire bounces off of them, you will be glad you had them on. And I think they could be decorated to make them more fun to look at, like painted bifocals.