Check out this post on StarbucksGossip.com, regarding the chain cutting back on the number of drinks on its menu:
The "baristas" don't like having so many flavor choices, they don't like people who can't make up their minds, they don't like all the "work" of making cold drinks . . .
And here's my favorite quote:
"Given the propensity of clients to specify special combinations "Half decaf, Half chai, 3 Spendas, and a splash of lemonade", I'm not sure the answer is to cut down on the actual drink options offered on the menu. It's that one overweight, unemployed teenie-bopper who want to customize her drink to the -enth degree. Nobody can call that back rapidly; she can't even order it rapidly. That (to me) is what slows down the service."