prepping for retirement?

This car, and in particular the engine , has been problem free for a good many years. The list of things not needed done is extensive, I still use the original spark plugs, all the fluids have proven successful with all the components. Nothing in the engine compartment has been replaced, the only issue is the final drive in the transmission, after 12 years trailering stuff it makes rattling sounds but has yet to fail. I will not be using it as much as I have 2 other cars to drive and maintain, not that this is the final post, but all fluid tests have proven themselves over long periods of time so this will be its primary function and purpose.