Caporegime
Everyone's needs are different. My wife has no interest in driving a manual. Hire cars are would never be an issue for her as I drive us everywhere. Once she passes she'll only ever be driving to her parents or to the shops while I'm working.
You can't account for every foreseeable future need. What if you're in an accident and she needs to take over the driving on a more permanent basis? Like I said above, you're ruling out a huge part of the used car market (and hire car market) for no reason at all.