From someone who left about a year ago (on PVR) to an airline job, my advice would probably be to stay in (the RAF) just now. I feel fairly nervous about my position! Recruitment has effectively dried up and the airlines are all hunkering down to weather the storm. If you hate life in the mob, and I mean hate it, then leave, it's one of the best things I ever did. However, if you don't have a job lined up.....
Good luck.