Our primitive brain, at the sight of a vegetable, screams: don't touch it! Something similar must have happened when we tried the first sip of beer, a rejection called food neophobia. For our ancestors, the plant kingdom was the leafy framework in which they lived and from which they obtained materials to build shelters, clothing, weapons and all types of artifacts and tools.
We are made to survive in a sea of ivy, bushes, flowers, trunks, stems and leaves of all kinds.