I think with having kids, Christmas would have to be my favorite. Love the excitement, decorations and all that good stuff.
But...I also agree with the summer holidays. I love to be outside and doing things as opposed to being cooped up in the house all the time.
I also love Christmas. The past couple of years have been stressful around Christmas time though. DH's family has like 4 parties and its a lot of driving around and gift giving. My family is so chill though. I prefer Christmas with my family. I can't wait until next Christmas though, I think it will be so fun with the little one!
I also love the summer holidays! Speaking of holidays, we are having a St. Patti's day party at our place, since we live so close to the parade now. That means I get to take care of all of DH's wild friends.
I do love Christmas, even though I wasn't as into this year (I think I was too focused on upcoming baby stuff). It is a blast with DS getting old enough to get into it. I also love the 4th of July!