the thing with bike maintanence, much like car stuff, is it depends how you ride it/drive it.
Would you change the oil on a race car on the same intervals as when you changed the oil on your daily commuter?
No.
So why would you maintain your DH race bike the same as your commuter?
A long weekend in whistler bike park is likely worth a scheduled check up, where as you could ride your bike to work for 3 months and not look at it.
It all depends on use, abuse, and conditions.
If I spend 4 days in a row in whistler i'm gonna redo my fork oil and bleed my brakes. I know its going to be shot, or close to it, and I know everything is going to need a thorough cleaning and upkeep.
Knowing the signs of when things need to be serviced early on is important to not letting it get so bad its grinding, binding, creaking and seizing.
yes i still ride a bike…rumors of my demise have been greatly exaggerated