I hear you, Chris! Graduation day 2005 was probably the worst day of my entire life that didn't involve a hospital or a funeral home. This despite the fact that my d2 was valedictorian, all living grandparents were able to attend, and the weather was spectacular.
Not to hang too much dirty laundry, but the stressors included a car that self-destructed on the way home from the shop after $700 in repairs; a husband with a short temper who hates spending $700 on ANYTHING, let along a moribund car, and whose visiting parents bring out his absolute worst side; husband's mother, who has always been critical of graduating d2 while obviously preferring d1 and husband's two nephews; nasty spat between MIL and my mother, who had previously managed to maintain a frosty truce for 27 years; d2, who can be VERY difficult, kicking it into overdrive to see what it could really do. Those are just the high points - I could go on.
No kidding - I cried for a week afterwards because I was so disappointed and hurt. Fortunately, a few wonderful friends helped me see the (admittedly black) humor in the whole thing. And d did give a very nice speech.