The golden age of science fiction, the era when science fiction was most popular with the public, occurred when most of that fiction had a positive outlook on the future. I don't think that's coincidence.
To any aspiring authors out there: If you want to stand out and be successful, write stories that show a path to successfully overcoming the obstacles society faces today. If you can successfully do that in a way that doesn't come across as trite and condescending, then you are onto something.