Shane:
The term "Contemplative" or "Contemplative Lifestyle" in Catholic tradition refers to monks, nuns, etc who lived in monasteries, withdrawn from the world...
I am not Catholic but was quite well exposed to it at one time (by marriage).
This may not apply to anybody else but me, and I am making no accusations, only sharing.
I once felt very much as you did about the term 'mystery' I was VERY critical about the Catholic teaching that we just accept things we cannot understand and call them "mysteries".
God, man, I would think, use your brain and work on it! Don't be lazy.
Since then I have thrown down some idols in my life. Some of the idols were named 'intellect' and 'understanding'. Now I accept that there are many things I do not understand, and many things the church does not understand. This does not mean I have become intellectually lazy. I do not pass everyting off as a Mystery, these days, but I certainly am more accepting of the concept that we cannot understand all of the Mystery of God and how and when He does what He does....
Scripture says,
"Who can understand the mind of God. His ways are not our ways."
Paul also said, in his great passage on Love, something along the lines of "Even if you were given the ability to understand ALL MYSTERY, it would be hollow and meaningless without love. This passage makes such understanding seem not likely.... or describes it as a rare gifting.
Who am I to argue with that?
Now, it is a mystery to me why some Christians never experience their spirituality in the terms I described as Mystic. 
But their walk can be judged valid by their fruit.
You call it common Christian Spirituality. That may be a right terminology. Maybe I am misusing the term? But I think these things I mentioned are also correctly called Christian Mysticism.
Anybody else ?
