4 speed conversion. Help or hurt value of car?

..mean while - I am in the keep the AT camp - my days of driving anything but an automatic are done. It's not that I don't like them, they just don't like me back - my left knee just can't take it anymore. So as far as resale goes... everybody can drive an automatic, even if it's not their first choice - not everyone can, or wants to drive a standard. JM2C