IMHO, we have lived so far from nature that we are more socialized normal. Feeling natural often means just feeling familiar and habituated.
While nature sounds good, I personally don't see many people actually making a decision to walk in that direction on a daily basis. Do you?
What I'm asking is why an airplane or any other product of human living is less natural than anything else? Is a beaver dam "natural"?
I guess that I'm asking for a clearer definition of "nature".