What took so long?

I understand that with the weather changes, people's moods change.
But WHY can't we all have fun and do things in the winter too?? I would be totally okay with driving in the snow, being out in the cold.
I really don't like that the only way to add color to the bleak and dreary ugliness of winter is slitting my wrists of complete and total boredom/depression/etc.
Now that it's spring, everyone seems to be out more, doing more things, and having fun. What was wrong with a couple months ago? Couldn't we have done it then too??
Sheesh!
I guess I can't complain, it's Spring and people are going out. So I'll just have to try and keep them from being hermits next winter.