Fewer bugs in a big mess?
I have noticed that with my vining plants, such as beans, squash, etc., I have fewer problems with insects, such as aphids, squash vine borers, pickleworm, etc., if the plants are growing in a big mess. If they're growing "properly spaced" and "orderly" I seem to have quite a few problems with insects. This seems counter-intuitive to me.
My guess is that a "big mess," with things growing more closely together, maybe there's a better habitat for predators? I see a lot of lizards and geckos in the wilder parts of my garden.