Quite true Beags (probably!)
I dont think it ever is just down to money. Quality of life has always been the driving factor to those I know that banged out (myself included).
constant operational tempo, lack of variety, primitive working conditions, shagged out old aeroplanes, fleets being cut, bases being closed
Add to that poor accomodation at plenty of of bases (single and married), erosion of the work/life balance, continual feeling that you're getting shafted over T&Cs, allowances etc etc
It all adds up to not enjoying the good bits as much, because they're now outnumbered by the bad bits...