There are some explanations in media that I love, and some that I loathe. I don’t care too much for exposition, usually. I don’t need the gateway scene; I don’t need the complicated description of how our heroes get from one world to the other. All the stuff in Tron about the orange and the transport laser is annoying at best.
But I do love explanation when it comes to apocalypse. When it comes to end of the word scenarios I want every grim and grimy detail. I want to watch it all come apart in slow motion. I find myself frustrated with apocalypses that are not specific enough. I hate that the Walking Dead used the bullshit excuse of coma to skip over what should have been the most interesting part of the show.