I frequently worry about my annual visa renewal, knowing that I'm not a citizen in the place that I live and keep all my stuff. Should they ever decide to say no, I have to pick up and leave.
I live in a rather wonderful place (Berlin), but I frequently miss my home and native culture. I wish I could go back, but I have a general personal policy now of not visiting countries that keep political prisoners. Being a hacker and relative weirdo, I've seen too many cases of harassment of those who make a point of themselves (within the confines of the law). Examples include everyone from Sklyarov to Appelbaum.
I'm writing a rather lengthy paper about my reasons for leaving. It covers the data points that spell out, in my opinion, why it's now lunacy for reasonable people to continue living in the United States when they have the option of getting on a plane and going somewhere else. Unfortunately my current project workload means I probably won't have it edited down until at least winter, but stay tuned.