Lets not judge people based on whether they do their own vehicle maintenance or not. Many people, both males and females choose not to do their own auto mainenance. Everyone has their own reasons, and it does not have to relate to whether they are mechanically inclined or afraid to get their hands dirty.
Not everyone does their own plumbing, home building, electical work, acts as their own lawyer, or do their own surgery on themselves or members of their family. Most lawyers will hire another lawyer to represent them in legal matters, and doctors rarely treat themselves or family members and it has nothing to do with a lack of knowledge.
For well over forty years I haved done all the maintenance and repair work on all my vehicles, but as I have gotten older I find that it's far less time and trouble for me to just have a shop change the oil. I have the tools and equipment to do virtually any repair on my vehicles but I am more selective as to what I choose to do based on what the shops charge vs how much it would cost and the amount of time it would take me to do the same job.
...Rich