Assuming you're the only one with a certain opinion is equally ignorant. There's no reason to point it out besides being rude, so try to keep it civil from here on.
You're not the only one who thinks it's a bit too powerful. However, the nerf discussion has been focused around Reverse Time since it's a spell and thus mostly impossible to stop. The problem with Eternity is that PC is too rare. I love powerful weapons and perms, but because PC is so rare anyone that doesn't pack it is in for a huge disadvantage or even automatic loss if the situation is extreme enough (Dim Shields).
I don't think the solution is nerfing Eternity since it's not overpowered compared to the other strongest perms. I think the solution is adding more in-element PC, soft or not, to the game.