I always knew my parents put out the presents, and then more recently, they were all their before christmas eve, so yeah.
In that sense, for a long time I never believed Santa came down and chimney and put the presents out, though we used to leave mince pies for him, and water and a carrot for Rudolph.
Aside from that, I guess I do still sort of believe in him, and I did used to, when I was like, 5 or 6, just because it's nice to think there's someone so nice and happy and jolly out there.