Between the three i guess by a slight edge Christmas. Although there is a lot of stress involved, and shopping, planning, wrapping and the money we have to save up all year to make it happen. I still like Christmas it is still fun to watch my kids open their presents, and playing the Christmas music, putting the tree up and all the decorations we have bought over the years. and the manger scene handmade by a grandmothers friend over 45 years ago to remember what Christmas is for in the first place. We like to watch holiday movies every year that our kids also enjoy. so even though Christmas can be a heck of a lot of work. in the long run I still enjoy it. Halloween would be a far second since it was fun when I was a kid and when my own children got to go trick or treating but it is no where near the fun day I used to like. and as for Valentine's I am with Irish git. it is a rip off day that obligates people especially men to get stuck buying over prices flowers, candy etc. we only buy the damn Valentine candy when is is at least 50 percent off. and not to celebrate Valentines. it disgusts me all those made up "holidays" like Valentines, grandparents day, and a second attempt Sweetest day. come on what a rip off. greedy greedy!