Lukas,

I try to off seasons a lot, although sometimes those are the best for photography. I thik that is true for Winter in Bryce and much of the red rock areas of Utah. But it needs snow to be worth the chill. It certainly is nice to hike a loop through Bryce and only see 6-10 people. Of course, some places are just out of the way enough, or expensive enough to reduce the crowds.