In the end it does indeed mean that my faith wouldn't be genuine because I would need to sustain it artificially, and I would know that I was doing it.
Or simply the time came for you where you were faced with the option to "upgrade" your faith, or stagnate (and eventually leave).
It seems you came somewhere to Stage 4 on the Fowler scala ( http://en.wikipedia.org/wiki/Fowler's_stages_of_faith_development ), but didn't go into it fully, perhaps because your life was otherwise so comfortable so there seemed to be no impetus to move on.
I suppose you can wait for the sky to fall down, or make a concentrated effort ahead.