Not quite right, my friend. Sauron, being Maia, is deathless within Arda. In taking on a 'mortal' or 'biological' form, said form could be destroyed (which happened twice); but the spirit (fea) could not. It would be 'houseless' or 'unclothed'. Sauron, without the ring, with the ring still in existence, continued to have the ability to take on a 'mortal' form (but could not appear 'fair' or 'good'). Once the ring was destroyed, all that had been made with it was destroyed. Sauron was diminished to a powerless, houseless, spirit. His punishment fit his crimes. Morgoth, his master and mentor, though was the ultimate nihilist. If he couldn't dominate it, he would eternally seek to destroy it. His punishment, which also fit his crimes, was banishment into eternal solitary confinement.
Originally Posted by Aieglos
"No sadder words of tongue or pen are the words: 'Might have been'." -- John Greenleaf Whittier
"Do or do not. There is no try." -- Yoda
On planet Earth, there is a try.
Indeed, in a world and life full of change, the only constant is human nature (A is A, after all :P).
We old vets need to keep in mind those who come after us.