Un-ironically: the pride of a job well done? Most people in software on this site a very well paid and well treated, the least we can do is do our job right.
Please speak for yourself. A comfortable cage does not inspire me to go above and beyond.
I very much doubt my "going the extra mile" will really affect anyone at all in any major way. It may make some made up numbers go up -- or down -- but realistically it will have no major effect on anyone at all, except myself (and negatively).
Whatever effect it elicits in another will be short-lived, and forgotten next quarter -- least of all recompensed sufficiently for the sacrifices made.