Wellllll...if I'm going to have a bias, I'll choose the happy one! As for dystopian periods, it's likely we're living at the start of one now. My hope is that AI, even if it doesn't result in Singularity, will at least give some people a few tools to help create a better future. Even if that better future isn't on a grand scale. Less like Dune and more like the Foundation Series.