For the last major U.S. elections, in 2004, I made sure to be in my home state of New York to cast my vote, even though it was fairly sure that my one vote would not make a difference in the outcome. New York was never going to vote for George Bush.
Still, it felt good to go to the local fire station with my sister and do the deed.
This year, I knew I couldn't make it to the U.S. in November, and I didn't bother to make the effort to vote in absentia. I feel a bit guilty about this but I knew that again, my district on Long Island, The Senate seat was safe for Hillary, my Congresswoman won by a big margin, and I don't care much about state senate races beyond whether they are doing a good job. The problem with voting overseas is that your vote gets counted (or so they say) weeks after the election results have been declared. You sort of feel out of it by then. Of course, if any critical races had been in question or I'd been in a state or district with a swing vote, I would have made that effort.