tis the season

What is Christmas supposed to "feel" like? I hear a lot of people say, and have even said myself, that it just doesn't feel like Christmas. I guess when I was a kid, Christmas felt magical and exciting, with the gifts and lights and food and parties. Even though all of that still happens, it's just not the same as when we were younger. Besides, none of that is what Christmas is all about, so when we as adults say it doesn't "feel" like Christmas, what exactly does that mean? It's Jesus' birthday. How should that make us feel?