Science Fiction planets

Over the past several months I've been reading (actually - listening to) the Hyperion Cantos by Dan Simmons on my work commute. The last time I read these books was at least ten years ago, and I had forgotten how good they are. 

If you haven't read them, and you're into so-called "soft" science fiction, definitely pick them up and give them a read. 

One of the things I've noticed as I've been listening to this book, and I think it's true of other sci fi work as well: we humans tend to give entire planets the characteristics of one of our climates: "this is a desert world," "this is an ocean world."

Weird, right? Like other planets can't have multiple climates.