Former B6 guy here. I've only been on property for a short time so I might not have the most insight but for me it was an easy decision primarily since I no longer have to commute (ORD based). There were also several other factors purely from a career progression standpoint that were too much to ignore as well. B6 is a relatively young pilot group, really minimal retirements in the next decade or so; UA is retiring almost 6000 pilots by 2032. They will probably need to hire at least 10,000 through that time period to not just replace retirements but to staff the "United Next" expansion plans which has the airline taking delivery of a plane practically every three days starting in 2023. Also there are currently 1 year upgrades on the NB side of things but that might change with TA2 if reserve rules are improved. Widebodies are also a thing if that's something you're interested in....and UA has substantially more than AAL and DAL. Not to mention the potential upcoming triple digit WB order that has been talked about lately https://simpleflying.com/united-airl...order-rumours/

I enjoyed my time at B6, but I've got over 30 years left in this business and it didn't make much sense to stay. Not sure what your situation is but you've got to do what's best for you. GL