Psh, Gothmog (the real one, not that silly orc) was more awesome than Sauron ever hoped to be. Even though he was killed, at least he didn't accidentally turn himself into a ring, only to have it tossed into a volcano by an obese 4ft person.
Hey, it's the price you pay for making yourself as powerful as an Ainur, which is happened when Sauron created the ring. With the ring he would have to power to enslave the mortal races and assault the other Maiar and conquer them. Sauron is the shizznat.
He was killed like a [censored] and lived as one too.
But Sauron isn't dead. Sauron has had his body destroyed twice now and still lives but now he has no power, poor guy