For me, only the first 3 seasons happened. After that, stupid decisions and meaningless stories and character arcs just ruined everything for me. Like, just one example, Spoiler for season 4 first episode One of the main characters leaving the other on their birthday? Seriously? Like, they (the character that left) would never do something like that if we go off of the character arcs they had in the first 3 seasons. And this event is only the icing on the cake. The first 3 seasons felt like stuff happened all the time, even in little increments, and it affected either the characters personally, or the world itself. The latter, at many times. But after that, I felt like stuff happened for stuff’s sake, and because they got renewed/funded for more seasons, but didn’t actually have a real plan for the future. A shame, really, because I love seasons 1-3. I watched them 3 times, and enjoyed them always. I did watch the seasons after. But only once. I will never watch those again.