Paying tax as an US citizen living abroad is not fun. You are double taxed, the rules change every second year, you don't get any straight forward answer from the IRS, you HAVE TO use a tax lawyer to file taxes and you're still not sure that you did things correct. The punishments for doing something wrong are ridiculous (e.g. my friend suppose to pay a 5% fine on her German husbands bank account, as a punishment that she did not list his account in her tax form although she has access (credit card) to his account).
Even if you try to do the right thing you get treated as a potential criminal. And this for paying money to the US and not using any of the benefits you suppose to get from taxes.
As long as the IRS doesn't make it easier for their citizens abroad to get rid of their money they will see many more of these cases.