Hi there.
I left the industry after 4 years of flying, to sample the 9-5 life.
I missed flying so much that Im returning next month. It is certainly true when they say you get the 'bug' for flying once your in the industry. If you enjoyed the job, then you will certainly carry your memories with you and if you ever find yourself comparing your new job with up there in the sky, there may be a little part of you that wishes you were up there amongst it all again.
Good luck with whatever choices you make in the future.
It's never too late to get back into it if you really miss it!