Left the RAF just under a year ago at 38 - best move I could have ever done. Civvie flying is much poorer quality but the lifestyle is MUCH better. It's a big and very personal decision - the RAF now isn't the one we joined, but it's the only place you'll get the 'cut and thrust' of front line ops if that's what you need.
Personally I now enjoy having reliable time off with the kids and going to places on the holiday program instead of the news!