In order to advance the argument that the catechism is wrong in its teaching that homosexuality is intrinsically disordered Humanae Vitae must be scuttled. The sex act must be seen as being complete even if the “natural” end is non-procreative. Rather than being an exceptional end caused by non-deliberate sterility or natural period of non fertility it must be argued that sterile sex is natural. This would mean the unitive aspect stands alone.
‘it must be argued that sterile sex is natural.’
interesting to see how that argument could possibly be advanced, except as natural aberration; sterile sex may in fact occasionally happen in nature, but quite clearly is not the purpose of it...