spring and fall are the best for temp and less bugs, just overall more comfortable. summer is nice but can get too hot, mosquitoes suck. winter sux I hate cold weather, having to dress up just to get the mail, shoveling snow, plus getting the kids dressed for the cold sux, I worry about it being too cold for them.
If I really had to pick just one, winter. It's the perfect time of year for snuggling, eating hot food, and wearing pants (which I prefer) as opposed to shorts.
But I usually get tired of a given season towards the end. I love spring for being green and relatively cool, and autumn for having Halloween and even cooler weather (though this is the time of year when bees and wasps get desperate and less shy!). I don't hate summer, but I hate hot weather, so it's my least favorite.
It is hard for me to choose Justine mine are spring and fall. One the weather is turning warmer and things are blooming the other the weather is going cooler and leaves are changing . That are both perfect.