Plan human no more

Hmmm let's see in the world there was a guy who loved someone one and a lot happened and after that he started to see how bad human are for this environment and for the floran fauna and the human society and now he wants to press the human delete button and only for human he loves animals that why he have a giant zoo in his place where he lives and the world all the human who are remaining is now in mediaeval age because not a lot so many people survived and now people don't have guns and bomb they only have stone's and rarely have knife and swords because it's to hard to find them and if anyone ever find a gun it's not so good to use them because the zombie can hear u and will come in a lot of quantity and people don't like each other and have territory and borders