1) Numbers do not exist in nature, they exist in our heads. any numbers we see in nature are an artefacft of the seeing, not the nature. They are a simple way of describing relations between measurements we make.
2) As Zdragva points out, the set of operations that generate the Fibonacci sequence are so elementary that it would be far better evidence of the existence of God if Phi didn't turn up in our measurements (which to be dimensionless have to be taken as ratios) all over the place.
3) Douglas Adams, a noted atheist, cited earlier, inadvertantly provides us with a perfect example of how you can see whatever you want, wherever you look.
FOLLOW THIS LINK to see how.