I'll go on record as saying that I have a very hard time believing the the more intricate ones were created by by humans in the middle of the night.
It just doesn't seem possible.
I am therefore leaning to some kind of intelligent life. But I think that it is a mistake to automatically say "aliens." It is possible that there
has been intelligent life living on earth for millions of years, but it exists in an energy form that is invisible to us. I apologize if this scary to
anyone, but I think you need to be more afraid of humans rather than intelligent energy beings creating beautiful crop circles. And don't think of
these energy beings as being shaped like humans. They might not be shaped like anything.

