Day 1,700

It all started with antibiotic resistance and things only got worse from there. Before we knew it everything around us was getting stronger, stranger and harder to kill. It was fine for some things, I mean livestock were living longer and were generally healthier, it may take decapitation to kill them but they taste better too.

We didn't think long-term because, in all honesty, the few of us that do are ignored unless they have good news and they had absolutely zero good news for us. In fact the news they had was that humanity, for once, wasn't adapting like everything else was. We were starting to lose our evolutionary edge to the common fucking cold.

It'll only take a few more generations and we'll be sickly little things stuck inside sterile chambers while the world outside struggles to maintain itself. It's gotten a lot harder for predators to survive, what with their prey just straight up not dying and carrying on like nothing ever happened.

Soon enough herbivores will overrun us all and eat until the world it nothing but dirt and bones and then they'll turn to us and our heavily modified crops for sustenance. If we haven't reached Mars by then, we'll just have to die alongside everything else.