I'll describe my take on winter v summer like this...
If I'm going out in the winter, and it's colder than I expected, I can always throw on another layer of clothing, a scarf, etc... to stay warm.
In the summer, you could strip naked, and you'd still be scorching hot.
Also, some of my best childhood memories are from winter: snowball fights, snow angels, building snowmen and then clotheslining their heads off, building anatomically correct snow people, hot chocolate in front of the fire after going back in from a long day of play, and oh yeah, CHRISTMAS (winter in this hemisphere anyway )