Line pilot to FAA job.   

I made the "jump" a couple of years ago and do not regret it.  After 20ish years of flying (mostly utility) I was able to take a vacation with my family during the summer a couple of years ago and pretty much know where I am going to be working (not much travel so far) all throughout the year.  No last minute "Hey, you are flying to (somewhere away from home) for a month starting tomorrow.  Go pack your bags.".  I can not speak to all locations but the FSDO that I work out of is very supportive of family/personal time.  Deadlines must be met but, if time off is preapproved, they don't take that away and ensure that another inspector will help your operators while you are gone.  

I miss the flying as we do very little of that.  We receive quarterly flight "instruction" and field rentals are possible to provide familiarization to specific aircraft that we might need to conduct a check ride in.  I don't know if Part 119 mgmt experience is necessary but it sure helps (former DO and check pilot).  Initial pay can be lower than many private sector jobs, but it can/usually will increase annually or with increased responsibilities.

If you love to fly, this might not be the job for you.  If you hate paperwork (computer based now) and working with alot of different people (air operators, cert holders, complainants, etc.) sounds horrible, this might not be the job for you.  If have flown alot, can give that up, and you want a consistent schedule with a decent retirement/benefit package this isn't a bad place.  Many will disagree and everybody is alowed their opinion/personal experience.

Try this link for info: https://www.faa.gov/jobs/career_fields/aviation_careers/asi/

My two cents.  Good luck.