There are so many individual likes/dislikes, etc that questions like this are really difficult to answer with any sense of objectivity. In my opinion, the goodness of WB flying has almost nothing to do with the destinations. In fact, I'd rather spend the evening in San Diego, LA, Seattle, etc. WB flying crushes domestic because I'm flying one leg over, one back, done; trip complete. As long as you can sleep and manage your rest, I can't imagine a better work:$ ratio in any aviation job. So, the fact that you cross an ocean in the mil, to me, has no bearing on whether you should want to do it or not on the 121 side. It is a hard decision because you're getting into seniority that's tough to give up, and the questionable future hiring pace.

I hear you talk about being happy. I really don't think a move would make you "happier" quite honestly. This job, while an awesome job, doesn't give me a huge sense of personal gratification (happiness..?). It's a great job in which I get paid really well to do very little, but as far as gratification - meh...

I had a previous career that was a lot more gratifying, but also had a lot more headaches, a lot more stress, less money, and a lot more of my time - all consuming at times. This job gives me the time and money to focus on gratification in my personal life. Maybe this job - at either location - won't necessarily make you happier per se.