Joined B6 in Nov. FWIW I live about 40 mins from BOS, I'm sitting Long Call, get every day off that I want, and get called roughly once every other week. Pretty darn good QOL in my opinion (in a very short time period). I previously commuted at my prior airline and you couldn't pay me enough to do it again, especially living the local life now. While it is true Delta might open a BOS base, doesn't mean it will stay open for the rest of your career. There's also no guarantee the Delta BOS base wouldn't go super senior (like the AA BOS base).

As others have said, if B6 closes BOS, the company is probably going under and we've got bigger problems to worry about.

Who knows what the airlines will look like in a year or two no less 30 years down the road, my decision was based on where I could hold BOS quickly and have good QOL.