I'm fortunate in that I love my job (in the way you mention Ottawa - I don't love all aspects of it, but I'm happy doing what I do).
Mustachianism for me, isn't really about quitting my job, or finding a new job that I enjoy more. It is about my realizing that as my income has risen, the lifestyle inflation (and all of the "stuff" that comes with it) hasn't increased my happiness. I've always considered myself a happy person. I look back to the days when I had just started my first job out of school. I had almost nothing to my name, but I was happy. Since then, my salary has gone up by 5x and my net worth has gone from a negative value to $600k, but my happiness has stayed the same. If anything, some of the "typical consumer" type behaviors that I've fallen prey to have sucked away some of my happiness.
Looking back on my life, the things that have made me the happiest are, without a doubt, experiences and personal relationships, not things. So that is my focus - experience more and experience it with people that I care about. I can do more of this if I am financially independent, so I am striving for FI.
That, and I also view it as a challenge :) My goal is to have more fun and more great experiences while spending far less money.
Thanks for posting the article, by the way. It lead me to a series of other great articles.
-MFC