I woke up at 28 years of age. I progressed pretty rapidly in declining my service amount of any sort. I believe all the reading I did as well as seeking therapy helped my progress to break free from the "truth" mentally. I am also now realizing or at least feeling that subconsciously perhaps I never really believed any of it, and that made the mental release somewhat simpler. The guilty feelings passed rather quickly.
A few years later, I am still attending meetings in support of my wife, but miss as many as I can (which lately has been a lot ).
The next goal is to drop that completely. But timing is everything, and so far things are looking up.
As far as an age in general though, I have noticed a number of people my age, early thirties, begin to wake up. But that is just personally. I wouldn't make that the magic age.
In my case, it took me finally really feeling like an adult, and then the questioning began and the blinders fell off, almost instantly.
That can happen at any age though.
CoC