As a means of writing sentences, Wingdings fails — but that was never its purpose. It was created to be used as a unique tool for the pre-internet era. It was akin to emojis, but with even more utility.
Today it's easy to cut and paste images from the internet, but it used to be a lot harder. There were few ways to get images, files were way too large for puny hard drives, and they were of poor quality. Even worse, it was tough to get pictures to play nicely with text. Fonts like Wingdings provided a workaround by giving people high-quality, scalable images that didn't clog up their hard drives.