Because my wife works here - and I'd follow her anywhere. ;)
We were in Russia - out in the streets - when they re-elected Putin. We were in Canada when they elected Harper - who's so hardcore that even Texas warns him that he may be pushing the limits. We were in Spain to witness the unemployment issues and people getting poorer and poorer.
We were in Quebec last spring and saw all our natural resources sold for peanuts to foreign investors, students and citizens beaten and arrested for no reason, new laws being passed that rubbed citizens of their most basic rights and, finally, our new prime minister being the target of an assassination attempt when she was elected last week. If you want peace and quiet, the last place you want to be now is back home.
Let me put it this way: my wife sang for the prime minister of Canada on Canada Day a few years back and still regrets it. She sang the national anthem for the Mets this summer and had tears rolling down her cheeks.
Trust me, the US ain't that bad. ;) We love this country man, honestly, in spite of all its flaws.