When I was a teen I had one, and was fascinated by it. I never see them anywhere now. I had a huge collection of cacti and succulents then, but now I only have enough sunny windowsills for a few.
I've been thinking it would be fun to have another "Mother of Thousands" plant, though I don't know what I'd do with all those baby plants, lol!
They are entertaining! It's kind of like Friendship Bread, though. At first, everyone is very enthusiastic about asking for some starter, but soon, everyone that wants some already has some, and there is no one left to give it to, and it just keeps on producing! LOL