[quote]at the beginning, the Didact wants to save the Humans. I don't see how this could lead to his hatred of them. Furthermore, the Librarian seems to want to destroy the humans, yet in the next terminal, she wants to save them (it seems like her and her husband are in opposite opinion.[/quote]LoA would be better at answering this one. [quote]in the second one, the humans hav found a planet they think might be flood-free. how hard could it be to send a message to the forerunners "hey, there's this alien parasite attacking us, it'd be great if you guys could help out. also, this is why we've been eradicating your planets. you would have done it, too."[/quote]Again, LoA would be best at answering this. [quote]how could the halos be a better plan than the didact's prometheans (which were decently effective. option 1: killl everything in the galaxy. [/quote]Because The Flood had access an the ability to use Precursor tech, such as Star Roads. And Precursor tech can only be destroyed by the Halo Rings. [quote]option 2: let stuff live, get more soldiers in the composer, and defeat the flood. then return life to the galaxy. it seems like the halos are ridiculously unreasonable when the prometheans (in enough numbers) could at least put up a good fight.[/quote]Because The Flood would absolutely demolish them. Again, the Precursor tech comes into play, which would essentially rip them a new asshole multiple times over. [quote]why didn't they just leave the galaxy? it's not like they couldn't make it to another near by galaxy. i know that they touch on the galaxy topic a bit in cryptum, but that doesn't explain why they'd rather completely irradicate life in that galaxy instead of just moving to another one.[/quote]Because the Flood could just follow them and continue to kick their shit in.