My mom bought us one about 15 years ago. She was desperate to find something as a Christmas gift for our CAT and she thought the Roomba would entertain the cat!
It's in a closet somewhere, we used it a few times. The cat, she was unimpressed.
My daughter has one and the technology in them now is frightening. It sends updates to her cell phone and she got a message that it was stuck "on a cliff". She didn't recall having any cliffs in her house!