I always thought we should get a discount if we offer DATY.
Judging by chat from various providers I get the distinct impression that a lot of guys are more than happy to just use the girls as a warm wet place to put their cranks and not a whole lot else, and don't particularly give a rat's ass if the girls cum or even feel good, or even feel human (fast houses suddenly come to mind).
A good, skillful pussy-eating session makes for a happy woman and a happy woman is more inclined to make a happy man.
Then again a lot of guys have no fucking idea what they're doing when they're chowing down, so, oh well.
But it's pretty awesome when a hot young girl tells you - even if it's a provider - while her pussy muscles are contracting, her cervix is poking at the head of your dick and you can feel every ridge inside that fun factory as her cum finds its way onto the base of your shaft, that she WANTS to suck your cock, and that she wants you to come back and fuck her every day.
Of course your mileage may vary.