To begin with, my intention is not to insult you in any way.
It is difficult to explain to someone outside the CAF what exactly the job is, no matter what the Trade. One thing to remember, as a member of the CAF and one who intends to progress up the ladder you will be expected to show responsibility and leadership skills which will entail administration at various levels in that process. You have to evaluate what you want in life, be it in the military or as a civilian, and if you are happy being a minion so be it. If you do want to progress up the ladder in any occupation, you will have to eventually do "office work". One of the best resources to learning those skills is the military, and the better a leader you can become in the military, the better chance you have to be so outside the military.
The portion of your quote above indicates to me that you were not following your heart in the first place. You did not follow the advice so often given on this very site, not to apply for a job in the CAF that you did not want, just to get in. If you do not want to work on computers, etc., in an office environment; do not apply for that Trade in the CAF to begin with. So many posters to this site, seem to want to start their careers at the top, so don't be so egotistical to think that applying to become an officer is the only route to take.
I might add that depending on how much of a "non-office" type of person you are, the CAF will provide you a very wide range of 'outdoor' experiences, across Canada and around the world. Army careers will have more to offer for those who prefer to be 'grounded', while the Navy offers the high seas.
In the end, I would find a civilian job more monotonous than a career in the military. The variety of experiences I had in the military, I would never have gotten outside of the military and I was paid to do them, not paying to do them. Anyone who is following this and trying to decide whether or not to join the CAF, has to figure out what kind of person they are. Do they want to stay close to their home town and work in a repetitive job, or do they want to venture out and see some of the world in a career that can change their circumstances in an instant. The CAF is not for everyone, and many do not remain after their first or second Engagement, but they will leave with 'life skills' that they would never have gained had they not joined, which may benefit them in their new careers. That in itself is a positive. -- All applicants must look at themselves and make up their minds what kind of person they are and what they want in life. Don't come back when you are 40 or 50 and say that you always dreamed of being in the military. Time will have taken its toll on you by then. It may be too late for you then.