It does make it hard to believe you have not misused the vehicle when you say that you have done "hard driving" and it "Will drag the [censored word removed] off most SV6 and XR6."
If you were aware that oils break down with time and temperature, why did you not do some preventative maintenance?
A filter and oil change is a bit of a pain, but overall the benefit outweighs the time taken and risk of failure. Just because a manufacturer says you don't need to service a component, doesn't mean that you can't. There are many cars out there with more kilometres on them still going strong.