Coincidentally we each received our watch as a high school graduation gift long before we were married. We graduated from high school the same year. I wore mine for at least four years straight hardly ever taking it off, playing intramural sports in it, showers, swimming, sleeping, everything, but I always tried to take care of it, too. And I wore it off and on for the next 10 or so off and on. It has been serviced, I think, three times in its life. The most recent was just a few years ago, when I sent both it and my wife's to Rolex for a complete service and "refresh" before putting them both away for our kids to have on day. Mine looks mint, I have to say. Except for some bracelet stretch, it is as good as new, and it runs that way, too.
Best,
CaliforniaJed