Guitars (like all stringed instruments in particular) are sensitive to changes in temperature and humidity: The strings and the neck expand and contract with those changes and that will often impact your set-up.
Playing itself can also gradually change your set-up: Every time you play, you are subjecting the strings, nut, tuning pegs, neck and bridge to stress that may impact your set up. Often you won't notice it right away but then one day you'll realize 'Hey - this thing played a lot better when I got it set up last year'.
Changing strings often requires a new set up too.
Many professional musicians have their instruments set up by a pro regularly for these reasons - often on a seasonal or monthly basis. Also included are woodwind and percussion instruments.
So yes - your analogy to an oil change is a good one: Quality musical instruments are precisely designed, delicate machines and they require diligent maintenance to keep them functioning properly and comfortably for your particular playing requirements. Bringing a guitar into the shop to have it set up the way you like it on a regular basis - after the changes of the seasons is a popular time - is a good thing to do.
Better still is to take the time and learn how to set up your guitar yourself, at least for small, seasonal adjustments. (Leave big problems to a pro.) It's not rocket science, but you need to learn how to do it properly or you'll find yourself with an unplayable, if not ruined instrument. Many guitar books and lots of website and videos out there explain the ins and outs of setting up a guitar - do some homework and learn about it.
I did just that - I own 6 or 7 basses and play two of them regularly. Once I learned I can always small adjustments, particulary if I change strings - to the trussrod, the action or intonation, etc. without worrying about screwing things up or bringing an instrument into the and playing $50 every time I want/need a set up.