I shaved Jennifer for the first time around 2007. Prior to that I would sometimes shave around her labia. A couple of things that have led us to keeping her smooth down there. First, we've discovered that men seem to spend more time on oral sex now that she is shaved. Second, with improvement in shaving technologies, it's easy to keep her smooth without the risk of nicks and cuts.
Part of our sharing ritual is me shaving her the day before we bring another man to our bed. Gets us both very hot.