Keeping a vehicle is cheaper than replacing it
Most people who keep a vehicle a long time did not plan to. It kept working, so they kept it, and the reason it kept working is usually that somebody was doing the routine items on time.
The arithmetic is not close. A fluid change, a belt, a set of filters and a brake service across a year cost a fraction of a replacement vehicle, and a vehicle that reaches high mileage in good condition did so because the cheap work was never deferred into expensive work.
That is the whole case for a schedule, and it is a better one than any single item on the list.
One place, one record
A vehicle serviced in five different places over ten years has no history anybody can read. Nobody knows when the coolant was last changed, whether the brake fluid has ever been done, or what was noticed and left.
A record changes what a shop can do for you. It means the next visit starts from what is known rather than from an inspection and a guess, and it means items get caught on schedule rather than when they fail. For a vehicle you intend to keep, that is worth more than a few dollars' difference on any one job.
What the schedule covers
Engine oil and filter, the other filters, coolant, brake fluid and brake condition, belts and hoses, suspension and steering components, tires and alignment.
Each of those declines without producing a symptom, which is why they appear on a list rather than waiting to be noticed.
Which schedule applies to you
Short trips, cold starts, dust and unpaved roads all shorten a service interval, which the national scheduled maintenance page explains, and plenty of vehicles here qualify on several counts.
For a vehicle you intend to keep for years, that is the detail that decides whether it gets there in good order, and it is the one most owners never find out about.
About this store
The Idaho Falls consumer store handles cars, SUVs, pickups and light trucks, open Monday to Friday, 8:00 AM to 5:00 PM, managed by Adam Word.
See the national scheduled maintenance page for all 33 locations.

