Yeah, an $800,000,000 effort to find a reason to keep their jobs
It does not matter that the rovers have no life science experiments - they needlessly have only a maximum range of a kilometer or so, so the chances of them finding anything are pretty small -
In an attempt to keep NASA in business after the International Space Station, the search for life on Mars is being promoted as being so important that it will be necessary to send men there -
Most people could care less.
True, they like the entertainment and diversion provided by Mars rovers, but as for sending men there, they stop supporting that in 1965.
ep