For some reason it never occurs them to ask women why they give blow jobs.
They decide it must be because men are worried that if they don't eat pussy that their partners will leave them for men who do eat pussy.
It never seems to occur to them that perhaps the dudes just like eating pussy or like pleasing their partners.
Also, they never ask themselves why there is a need to ask why men eat pussy and if there might be ingrained misogyny in asking the question in the first place.