The spoiler is not to let you know whether Harry Potter lives or dies. By now, you probably know it anyway.
No, the real spoiler is to let you know that the last book from the series is not going to try to change anything to the morals imparted on our dear children.
Because JK Rowling and many other people really believes that for something to ends well, it means that we should be married with our teenage sweethearts, have children with them, still be best friend with our childhood best friends and have a secured job, the perfect idealized life - before you get hit in the head with tough life - , sometimes a quest known as the bourgeoisie dream.
I wondered the same question as a Slate reviewer who put it nicely in those terms: "Did we really go through all this just to see Harry, Ron, and Hermione take up residence on a cul-de-sac?"
Or rather, did Harry Potter and his friends risk their lives non-stop for 7 years and did so many lovable characters die along the way so that the remaining living ones could just meet on sundays to have brunch all together for the men to talk about Quidditch while the women would talk about babies? Ok, a bit caricatural on my part but the epilogue really gave me this impression.
Maybe Voldemort won after all. His death allowed Harry to live a really cool life: fair, white and square.