Post Race Depression

Does anyone else suffer from post race depression? You train and train and then the big day comes, you rock it, you are on a high, and then BAM it's over! I keep signing up for races just to keep that feeling going. I hate the sad feeling I get a few days after a race, I miss the training and the excitement of the race, but it's unrealistic to do a race every weekend..How do you deal with it?