If it's your hobby, and it makes you feel good doing it, what could be wrong with being obsessive about it?
I am in a different (bipolar?) maintenance camp. I am conscientious about the maintenance items that I believe make a difference to longevity, but a slacker in some I think are a waste of time.
For instance, I change my oil at 5k oil intervals. I think that 4k miles is a bit too soon, especially when running synthetic oil (which I do). I'd go longer than 5k on the changes, but doing them on the 5's makes it easy to remember.
I do not change the oil filter
every oil change like some folks do, but instead I use the "every other oil change" as specified in the manual. It isn't needed, and really doesn't accomplish anything extra.
I change the gear lube in the final drive every other oil change too. Its cheap and easy and I think the final drive has a tough job. Keeping fresh synthetic lube in it can't hurt.
The air filters will go a lot longer than the interval they list in the manual, so long as you are not riding on dusty dirt roads (behind me) a lot.
. A dirty filter will actually pass fewer particulates than a new clean one does. Until it starts restricting intake air, which it would have to be pretty extremely dirty to do, there is no downside to extending the air filter changes.
I do the suspension relay arm pivots regularly since they hang down in the road spray, but on my 2005 I never did the main swing-arm pivot bearings as that isn't exposed to weather at all.
After adjusting the steering head bearing preload once, I never had to touch it again on the '05. I've done it once on the '14 now and that will hopefully be the last time.
I was an adopter of the zerk grease fitting mod for the brake pedal on the '05 as that makes shooting some grease in there easy peasy, and it's known to hang up and cause other brake problems. I'll likely do it on the '14 soon too.
Plugs and coolant get replaced when you remove them to do the 25k mile valve check. Wheel bearings get checked at tire replacements. Driveshaft doesn't need to be lubed after the initial anti-corrosive is applied.
I would never skip a valve check.
YMMV