To clarify, I agree that the overseas moves don't make sense in many cases. But they are happening. A lot of what companies do has nothing to do with what makes sense long term. Unfortunate, but true.

I was also much more productive at home when I regularly worked there. The company that allowed that realized this and let people work from almost anywhere. I was fortunate to be just over an hour from the local office, so I had the best of both worlds. At one point, I worked at home only for about 6-8 weeks and it was great. Even now, at my current job, I have a better home office and I usually start my day with a few hours at home rather than going in, even though it's only a 15 minute ride. Modern office environments (cube farms) are pretty awful for productivity in my opinion. But, unfortunately for me, newer management prefers us not to take entire days at home -- something I used to do pretty frequently early on. With the other job, where I worked at home a lot, the company was bought and that all ended. My real point was that the general trend I've seen over the past 5+ years is for telecommuting to be less of an option than it was, at least in my circle of friends.

I think in terms of going for a dream, you should definitely go for it if you're going to feel unfulfilled not doing so.