To dominate the world.
Leave no stone unturned as you pillage and plunder the local villages and relocate them to positions better suited for them, while 'saving' them from foreign invaders, the same ones you lured towards their new home.
To dive in to alien dimensions slaying all the defy your rule, and leaving the previous unexplored hell scapes in to glorified highways to better traverse the land.
To create fantastic builds that would put the palace on Mount Olympus to shame.
And becoming an unkillable god who sits upon his lonely throne gazing down at the world knowing that everything has become under his thumb.
And then when you are bored with your immortality you leave the crown behind to start the cycle again.