I'd take it, so I could change the world for the better, not give people immortality though because it's good there's a regular turn-over of people, instead I'd just improve living standards, slowly phase out war, reduce diseases to minimal, basically give people the happiest lives possible, all in secret. I'd create myself a daughter-god to live with too... and if I get bored, I can always pass on my powers to her and wish myself out of existance.