Because I would wish to kill myself eventually? It's hard to imagine that I would do that, faced with unlimited wishes. If I got bored, I could just wish the boredom away.
Though on reflection this wish needs a safeguard against infinite recursion, and a bliss-universe for any simulated copies of me the genie creates to determine what my wishes would be.
If you did eventually wish for death, then you would have judged that death is the best thing you can wish for, after having tried as many alternatives as possible.
Are you going to try to use your prior (I don't want to die) to argue with your future self who has experienced the results (and determines that you would be happier dying right now than getting any wish)?
Here's the new thread for posting quotes, with the usual rules: