I never buy extended warranties and never needed them but was considering buying one. Talked to my dealer and he offered it for $1,000 but he said he never buys them either. They just cover things that never break. Now I am sure there are some here that wish they had one for the one off problems. But when you consider all the SS's out there, how many are breaking after the 2 year warranty runs out? I have 26k on the clock and everything that needed work has been covered under warranty to date. The only thing I had done that I may have needed an extended warranty on was the brake switches.
I think it's a personal decision for everyone... It's bad math... because it has to be. Your paying for a form of insurance and the benefit is peace of mind, every one values that differently. Personally I think the powertrain only option is pretty cheap for the assurance that you won't have to cover major component failure. Last, at the point of re-sale an active extended warranty adds huge value.