Oh yeah if Sauron did manage to conquer middle earth we would loose the last noble men and our dwarves/hobbits. I'm sure the valas would intervene before that happened though. If the istari completely failed they would send over some vala to take down Sauron alone. Actually I'm not sure why they didn't do this in the first place. They could have sent orome into mordor and forced Sauron into submission. It's not like the battle would last for long, like 5 second and Sauron would be crying for daddy morgoth. xD
|