To me, breakfast is the most "routine" meal of the day, so whilst the odd pastry won't kill you, a daily pastry habit is not a great idea. And paying for someone else to make you a cup of coffee (with a poncy name) every day is definitely false economy!
*edit* But I am a bit of a pikey when it comes to breakfast. I do prefer the taste of real coffee but the office-supplied Kenco does the trick and is free (as is the milk that ends up on my cereal.) 
Edited: 26/11/2012 at 12:07