I think its funny that the same people that insist on owning the most expensive car, will not pay an extra $20 for an oil service. I pay $55 at the dealer and think that is completey reasonable.

I changed my oil myself for a long time, but realized that i didn't save much money, and when I added up the time to go to the store, change the oil, dispose of the oil and clean up and take a shower, that I was better off just taking the car to the shop. I use the dealer here as it is within walking distance. I also live in an apartment these days and changing oil in the parking lot is not something I want to do. Get a 'free' car wash at the dealer, too!

Plus, they can put the car up on the lift and see potential problems that I cannot.

That said, I like DIY, and tackling the less daunting tasks is fun.

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'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E