I live alone, do I need a roomba?

As the title says, I live alone in a 3 room house, it is very easy to vacuum. I have done some research on the roombas and they seem like alot of fun but also seem like a waste of money. I don't know if I should keep vacuuming myself or get a roomba so I can just let it do my floors for me. What are your experiences with roombas?