Let me recommend you read Parable of the Sower by Octavia Butler if you think the decline of humanity will be boring. It's a good wake-up call. The decline isn't boring just slow and painful.

"Beginning in 2024, when society in the United States has grown unstable due to climate change, growing wealth inequality, and corporate greed, Parable of the Sower takes the form of a journal kept by Lauren Oya Olamina, an African American teenager. Lauren grows up in the remnants of a gated community in Robledo, California, twenty miles from Los Angeles, where she and her neighbors struggle but are separate from the abject poverty of the world outside. Outside of the community are numerous homeless and mutilated individuals who resent the community members for their relative affluence. Public services such as police or firefighters are untrustworthy, exploiting their positions for profit and making little effort to help."

Given the current trend towards plutocracy and the rapid destruction of democratic norms by the Republican Party, this book just about hits the nail on the head. Substitute 2024 for 2050 and the timing would be about right.

Like Butler I also write science fiction and I've focused on what happens after the dystopia, since I simply couldn't write a better book than this one.

Try American Wars by Omar El Akkad as well also a very accurate description of a possible future..

"In 2074, after the passage of a bill that bans the use of fossil fuels anywhere in the United States, Mississippi, Alabama, Georgia, South Carolina and Texas secede from the Union, starting the "Second American Civil War." South Carolina is quickly incapacitated by a virus, known as "The Slow," that makes its inhabitants lethargic, and Texas is invaded and occupied by Mexico, while the remaining bloc, known as the "Free Southern State" (Mississippi, Alabama, and Georgia, or "The Mag") continues to fight. "