Hm, but there's different ways to have a favorite!   

Food - Christmas (butter cookies!)

Music - Easter.  I've sung in a choir all my life, and singing the Hallelujah Chorus on Easter is a highlight of my year. 

Decorations - Christmas, followed by Halloween.  I'm in a neighborhood with some rather creative people!

Family - The summer holidays.  Gatherings are low key and fun without all the extra stress of Christmas and Thanksgiving with way-too-huge meals.  Don't get me wrong - family is great and I love them dearly, but for me it's so much less angst when you don't have to worry about the heirloom china getting chipped and fitting everyone around a formal dining table.