Valentines day - I learned to hate it when I was working my way through college and witnessed the insanity of it all.  People would wait, with sometimes first-ever dates, for up to 2 HOURS for a table in the restaurant I worked at.  They would be understandably upset by the time they sat down.  The date could not have ended well.  Here's the crazy thing; it was the exact same restaurant with the exact same food on 2/13 and 2/15.  There was no wait whatsoever on those days.  Been married 23 years now, dated 5 years prior to that, and my wife knows I do not celebrate Valentines day.  If she wants to do something special the day or the week before or after I am all about that though.