Of Orcs and Elves - Mirror Image Opposites or Not?

[Ivriniel]

Orcs, we're told, were a species made by Melkor in Utumno where captured elves were 'ruined'. Lore also tells us that Elves and Orcs had a natural antipathy for the other. We know Elves are immortal, but we're never told anything about the span of Orcs in LotR or Silmarillion.

I want to know what is meant by 'ruined', which to Melkor might have meant something else, entirely. One Vala's corruption is another's purification. How did Melkor do the ruining? Was any trace of racial memory left to Orcs? Do they have normal emotional experiences other than what we've been told. They do fear, I believe, for example. Is there some prophesy or cultural practices amongst Orcs that ritualised worship of their Deity, and were they without an appreciation of beauty, truth and Spirit. Where are their Spirits gathered?

For example, we know that Orcs thought Lembas stank, that cooked meat ruined its flavour and that sunlight was to be hated. So, did Orcs think Elves were evil? We know nothing of Orcish procreation, though it is stated that they breed fast.

Taking a more psychoanalytic emphasis, it seems to me that the mutual hatred implied something, down deep, in each species that each was afraid to admit. Don't we say that hatred is love contaminated by fear? And in a more modern adaptation of inter-racial warring in sci fi (e.g. Gene Rodenberry) is there not some rapprochement between species needed in Eru's great plan, rather than mutually assured destruction.

I have wondered what Eru seeks for the Orcs as well as the Elves as well.