"but since certain parasites that can ONLY live on/inside humans exist, they must have evolved AFTER man"

Not necessarily so...could they not , just as easily, entered the human body as a generalist, later specializing only on humans after many years.

'man' is the 'highest form of life, just under the Angels'

Possibly much like a theory put forward by the RC pope. Seems more reasonable to also include women... and while you are at it, why not the octopus?