....but more importantly; when you upgrade at Delta, you get to be the big tool you always dreamed of! Plus, have you seen the girls (or boys -whatever your fancy) at Delta? I mean, hubba hubba....... or was it chubba chubba?
At the end of the day; who cares! It all boils down to pay and time off at home- I think most of us care less about what colors are painted on the outside of the plane, or what the destination is; and more about spending time with family.
Delta is a good place to be; however, the airline is not going to grow anytime soon. Two bases are closing, and hiring at Delta will be slim in the next few years.... IMHO. 747-400's are going away within 4 years (going green anybody?) - they will be 'replaced' by the 777 of course; but much of the anticipated growth will just be replacement flying. The world isn't coming to a stop, but if you want a job at Delta; you might be waiting 5 years. It's happened before, and will happen again - and just because you have an interview does not mean you will get a job (unless you are a chick, or are not white).