Lord of the memes

Would goblins/orcs still have endured without the lingering evil of Sauron?

They weren't naturally occurring (yes they bred but they were made to be a breeding army for evil and I'm pretty sure Tolkien alluded them to dying out quickly after the ring was destroyed) in Tolkien's lore I'm pretty sure and were interchangable terms for the same species in his lore even though they're different in others.