Oh Boy! I am going to catch it for this one.
It is my professional opinion that if you plan on keeping your car till 100k and getting a new one you will probably make it fine on just oil changes. The next guy will have to replace the car in the next 50k but you'll be down the road.
Proper records probably are worth their cost, in resale value, but as an independent I work on all of the above cases; those not servicing and those who have purchased those cars afterward.
Servicing is probably of little real value for most original owners ... who off their cars 10-20 thou after not doing the 60k service.
Owner 24 bay BSC
Bosch Master, ASE master L1
26 years MB technician