What I don't understand about Halo

[kn]

twesterm said:

kn said:
And last, but not least, when was the last time you saw anyone walk away from their property because of some intruder? Would you abandon your home to cockroaches or would you spend great time and effort to kill them?

If the cockroach problem presented me with the options of die or GTFO then yes, I would gladly just abandon my property.

I don't know, just the way they make the Flood seem it just seems like it could live real long without life to feed on. If it could live a long time, then it could just migrate to a galaxy that didn't get touched by the Halo's (like Earth) and continue to spread. I assume since they can follow they can go as fast as the things their following and since they can travel between places pretty quickly in the game the flood can move that quickly then.

 Well, the cockroach problem is not a "die or GTFO" optio.  It presents a real threat, but the threat is percieved to be "eliminatable" so the option to eliminate (or attempt to) is made instead of abandoning.

There are few such paradoxs in real life and the story certainly reflects this.  Rarely is there a scenario where life-changing events are set in stone and the exact outcome in the future is known definitively based solely on you choosing event A or event B exclusively.