Does anyone else find that the summer is actually more depressing than the winter?

I mean suuure you have the bad weather and shorter daylight, but it almost seems as if that makes me feel better about not wanting to do anything. "I dont want to go do ________ look at it outside". But when its nice out ... you see all these "happy" people walking around, going on with their lives all in good moods because the weather is nice.

Now THAT makes me feel like crap way more than less sunlight.

... am i just really bitter? Any takers?