I personally don't want to die yet (I have so much to live for!) So i would say i would die in my late 30's or early 40's
How? you ask? Very well then Basically these 3
1.(if he exists) Fighting God and all his Angels after making the Pussy that is Satan My Personal Slave (not gay) and waging an EPIC WAR against him. The war will then end after 3 centuries of fighting and it ending with me Caving in God's Skull with a Crowbar and Taking over the Throne of Heaven. After my Rule (Which may or may not be a Benevolent one) I would Abdicate, give the Throne of Heaven to My Second in Command Then Walk into Oblivion where i die, happy and content.
2.Assasinating the Leader of My Country, Taking Her Place then kill all the Politicians in the Country and turn it into a military state. I would then wage a war against my fellow Asian Neighbors, then after caving in the skull of the Chinese President with a bamboo stick I would Reorganize Asia into the FIRST TRANS-PACIFIC EMPIRE!!*cue evil laugh* I would then either die from trying to take over the world, but being betrayed and the world going into a state go Paradise it had never known, or use Chinese Intelligence to Contact the aliens and take THE MOTHERFUCKERS OVER! after which i see earth as small fry and try to take over the Universe.
3.Eating a Hamburger then becoming a zombie due to it being infected and (technically) causing Armageddon. (Zombieland FTW!)