Fall, blech. 
Everything dies, there are leaves to pick up ALL the time, heat to turn back on, early darkness, no more fresh produce from the garden, no more balmy days & nights, no bare feet....I could go on & on. Then you're staring down the tube at the holidays, ready or not. Then you have flu season, ice & snow storms, and all that MESS.
My ideal year would go from spring to summer to spring again!