I dont honestly dont know how I would handle my wife and some of my relatives being gone. I wouldnt take it very well.
While I was coping with all of that I would most likely amass food that would last a very long time. Id find a very large truck probably a big rig, hummer, or something of that sort and get myself as much food and gas as possible. Id secure a few generators, lots of tools, lots of repair manuals. Id raid a hospital for medical supplies including medicine. I would also stockpile weapons and ammunition, just in case there were still people left on the planet and they decided to find me Im assuming some sort of dictator would spring up among any population that was left.
Then, once I had taken care of supplies and grieving. I would totally find myself a sports car and drive way too fast. Id also do a lot of destroying for fun. Id blow up a few things and break lots of stuff.
Then it would be off to the nicest part of southern California that I could find - probably somewhere in San Diego. I dont want to have to deal with weather.
Id locate a nice house with an ocean view that was on stable ground (mud slides). Id probably clear out any trees for a good radius (forest fires). Id also make sure I wasnt in an earthquake area.
Id find solar panels and try to figure out the electrical wiring. Id make sure I had a computer or three along with a nice TV and lots of DVDs (including Dukes porn). I would make sure that the house I found had a septic system and Id stock pile all kinds of usable niceties like toilet paper and things of that sort. Id also secure an electric vehicle in hopes of being able to re-charge it over time with the solar panels.
When all of that was taken care of and my living conditions were secured for years and years. Id probably find some animals and try to become self sustaining on my cleared out land. Id grow a few necessities and Id have stockpiled vitamins for the rest of my life. Id amass candles and hook up generators to the house (for use as long as the fuel stayed good).
Assuming that I could get my living conditions squared away as I have prescribed. I would amass books to entertain myself. Id spend some time at the ocean and Id spend some time hiking, hunting, fishing, painting, drawing, and writing. Id also get a radio working hoping that I could catch some signal from other people on earth.
Then, I would leave behind a group of books that captures the history, philosophy, and physiology of humanity, probably associated with a manuscript of my own, and a legend for how to read those books. Id attempt to preserve these things well assuming that they would not be found for thousands of years.
How cool would that be?!?! I'd stay south so I don't hit any icebergs. 
