Most people who do this do indeed use their daily drivers. Most people can't afford to own a second $30,000 vehicle they can take out only on the weekends.
> I think the main purpose is [...] not to remove options from people.
And I quote: "Google had long distinguished itself from other companies for committing to the development of a true robot car without a steering wheel or pedals."
http://www.businessinsider.com/waymo-ceo-john-krafcik-self-d...