Of all the 'evidence' of alien life, crop circles must be at the bottom of the list.
Why would aliens draw pretty figures in fields? Give me a break.
I've read one claim that it's American military folks at a computer terminal tasking super high tech satellites.
However, folks have been in fields at night or adjacent to fields or overlooking fields and seen lighted orbs flit about the fields for sometimes just minutes or maybe close to an hour. When the orbs disappeared, the observers went into the fields and found a new crop circle--sometimes with electric discharge static sorts of sounds going off irregularly, too.
Basically, your dismissiveness does NOT match the hard scientific facts from a number of perspectives.
You can continue to hold your perspective, if it helps you sleep better at night. But it's not one consistent with the objective facts.
Anyone know how long ago the first 'crop circle' was reported.