My SIL had a Roomba. Emphasis on had. I walked in and stepped on it. Crushed it all to hell. She didn't buy another. Said it was kinda creepy, roaming around by itself, like a cat that wouldn't get out of the way.
HAHAHA! I hadn't thought that it could be creepy, but I read something about a woman who treated it almost like a pet. Okay, you're right, it is a little creepy.