1) extra costs.. food, decorations, presents, costumes, cards
2) storing the decorations the other 11 months of the year
3) the endless preparations and discussions
At first holidays seem like a fun and pleasurable experience; especially when someone else is doing all of the work. Then I remember the above 3 reasons and I cringe. Moving abroad helped to eliminate some holidays, at least for a few years. My in-laws rarely bothered to celebrate Thanksgiving, the Dutch didn't really understand Valentine's & Halloween, and Christmas, well my husband & I never bothered to decorate. But times are changing, unwillingly I might add. Mostly adding a child to the family changed things. People expect you to decorate and make a big deal about holidays, kids love it.