The ONLY reason I've ever had for going to an SB is in the event of a casual date.
I don't get standing in line for coffee, let alone overpriced coffee.
Whenever I walk into a Starbucks and I see a group of young 20ish women in front of me in line, I turn around and walk out. This is because they will take a full 20 minutes to place their order which is invariably a variation of "double-pump-non-fat-skim-milk-non-dairy-blah-blah-blah" undrinkable confection of some sort or other. Nothing simple for these young American princesses. Then they have to spend an additional five minutes looking at and considering the purchase of various overpriced pastries after which point they usually rub their stomaches and decline. Then, when the cashier rings them up, they spend another five minutes rummaging through their purses for the money, as if they were surprised to learn that they were required to pay for their purchase.
One reason to stand in line for Starbucks is that their coffee has more caffeine than the other coffeeshop coffees.