Why Are There So Many Wicked Stepmothers in the Brothers Grimm Fairy Tales?

Ever wondered why there are so many evil stepmothers in fairy tales? One apparent reason is that the Brothers Grimm changed many mothers to stepmothers. Convenient, which mother wants to read about a wicked mother to her child? This video is one of the series of "10 Interesting Facts about the Brothers Grimm" by Storyteller Rudolf Roos from internationalstoryteller.com