I guess if you don't make more than $100 an hour then working on the car yourself is worth your time.
Well, I suppose some people may reach that conclusion from a position of ignorance and short-sightedness.
You're right on one point - I get paid wages of $0 per hour (since no longer earn a wage since I'm retired), however I've done quite well to the point where the cost isn't any practical factor to me, although I still don't mind saving a dime. I can see that if one must still work to earn a wage in order to pay their daily expenses then they may need to balance the time they allocate towards earning the wage against doing other activities, including any DIY.
Just spending a hour less time on a forum like this once every few months is enough time to change the oil if one were inclined to do that - it doesn't always come down to hourly wage versus cost of service because people do more than just earn a wage and sleep - like spending time on this forum, or watching TV, etc.
But there are lots of reasons to DIY if one is so inclined that have nothing to do with money - for me it's quicker and easier to do things like fluid/filter changes, brakes, etc. in my driveway at my leisure than to have to drive it to a dealership and either hang around or bother with a loaner vehicle. For those who have no experience with DIY on an MDX (and most vehicles) - many of the items are actually simple to do as long as one is physically capable of performing the tasks. In addition, when I DIY these items I know they're done correctly and that they're done at all.
I can understand why some people 'want' to DIY even when they don't need to (like me) and can also understand some people 'Don't want to DIY' regardless of their financial position. Both are fine but it's best to try not to infer as to the reasons one does one versus the other - the inference and conclusions will likely be wrong (as with your statement in retort to my post).
There's nothing at all wrong with DIYing things or not DIYing things and there's nothing wrong with saving money either, whether one 'needs' to or not but again, saving money isn't the only reason to DIY on a vehicle or anything else.
Another angle on the 'dealership experience' - I can see that some people might actually enjoy the opportunity to drive various loaners that a dealership might provide. That'd be on the plus side for choosing one dealership/brand over another (I think Acura would be better than Honda on this point but I've never owned a Honda).