Price and quality. I'm there to get a coffee...I couldn't care less what the guy/gal pouring the cup looks like...unless, of course, s/he looked over-the-top freaky.
Most of my coffee comes from my kitchen, the rest of the time, it's drive-through or I get it from the local depanneur (convenience store). In neither case, am I there to oggle.
Just gimme my cup o'joe, take my coin and wave half-heartedly as I leave.
If the coffee with the hottie is more expensive than the one with the nottie, it's the same as buying a pair of runners with a fancy logo on the side. If I want to see bewbies, I just ask my wife. They're very nice, and it doesn't jack up the price of my caffeine intake, thank you very much.