As a Nav who's got PAS it seemed daft to leave and work for a living.
As a nav who turned down PA, I feel I'm leaving in order to get a living ....
There is a common misconception the aircrew (esp PA) pay is pretty good. Not for your accrued expertise, and what you do it isn't. I heard a primary school teacher on the radio last week complaing about his excessive work and he only got, wait for it, £35k. Not a Hd, just a teacher! There is money out there, and jobs too.
Take the mick all you guys want, but as much fun as it's been (and believe me, I've done some v cool things), I couldn't see myself as a nav for another 17 yrs .... especially in this political climate.