Getting hired by an airline is different, but definitely worth it. As has been said, networking is nothing more than tracking down old squadron mates, UPT IPs, etc, via LinkedIn, fb, or email. Ask them what it is like, and when the time comes, you can ask for a Letter of Recommendation.
As far as what it's like, I am a retired fighter pilot and fly for Alaska. Many want to fly a big airplane internationally, but I have no desire to do that, so this job fits me perfectly. I have averaged 7 nights per month not in my own bed, working 15 days a month or so. But that is unique to being based in ANC for Alaska. For May, I will only be gone for 5 nights, with 78 hours of pay. All in all, this is a great retirement job--but I would not have wanted to do it for 30 years.