I have great memories from childhood about Christmas. Like a PP said, waking up and seeing those presents under the tree was magical. I couldn't wait to get to Christmas day as a kid.
As an adult, I appreciate the meaning of Christmas much more (year round really). I still love this time of year and almost enjoy the lead up to it more than the actual day. It's a bit sadder for me lately, unfortunately. My grandparents are getting older and sicker so they don't gather with the family like they used to. And my husband and I haven't been able to have children so instead of our family getting larger, it seems to be getting smaller at the holidays which makes me sad. I don't like to think of my parents getting older either. And when we get together with my husbands side of the family, his brothers all have babies and their wives are getting pregnant, so it's really hard for me in that respect too.
I don't want to be a debbie downer though, so I'm constantly reminding myself of the true meaning.