I've never met anyone that had a gov't flying job that hated it. A little different work but you said it yourself you'll make 2x the pay. Now on top of that you take things like better retirement and health benefits and you're going to see a very substantial upside to flying for the govn't. If I could do it again I would. Plus you'll still have room to jump up the ladder.

My vote is go government. It's a step up from regionals so if you can do it go for it. There's no telling who will even be around 3-5 years from now. You've already seen Mesa, XJT, ASA, Colgan, Mesaba, Frontier, Midwest, Lynx, Skybus, Compass, Republic, Champion, Aloha, ATA, the Midwest regional, United, Continental, Delta, Northwest and I'm sure several others make drastic changes within that amount of time. It's such a coin flip on what's going to happen next I'd take the govn't job just to stop the insanity of always wondering what's going to happen to you next!