Doing your best to save your shitty village when the world IS rebuilding and GECK is no longer a Thing Of Great Importance doesn't make as much sense.
Strongly disagree. It's true that as executed, the game did everything possible to make you hate the village and the concept of going back to save them. But the idea that you would make a priority of safeguarding the well-being of your culture and immediate and extended family despite the fact that there's better stuff out there isn't crazy; it's a pretty ordinary human behavior. Of course lots of people pull up stakes and assimilate in a more successful culture (and some small percentage of people would use a magic box to help the most people, rather than the people closest to them), but plenty of people go to a more successful culture, gather goods (
e.g., money, education), and then go back where they started to help their family/town/what have you. The problem with FO2 is that it gives the
player absolutely no reason to have attachment to the village; the contrary, the game makes the village as stupid, tedious, offensive, unfun to the player as possible, so that you'd rather never go back, let alone engage in kung fu fights against aliens on their behalf. Also, of course, I'm pretty sure that giving the GECK to your village will just lead to its being conquered by someone who wants nice land, but, hey, no one thinks that far ahead.
That's not to say FO2 doesn't have big logic problems; it's pretty clear that the world is going to be just fine by that point, so the Enclave's behavior makes no sense. It's like the Kim Stanley Robinson's Mars series: within a couple years, things have gone from frontier hell to more advanced than the old civilization. Meh.
--EDIT--
Read your quoted language as "doesn't make much sense" --
i.e., I left out the "as," which changes the meaning significantly. Correctly read, I agree with you: in both scenarios, you have the save-the-homeland rationale, but in FO1, saving the Vault seems the most plausible route for saving civilization. If nothing else, you want the Vault to survive long enough to supply a stock of educated, healthy people to assist the rebuilt civilization once it gets stabilized; but it's far too early to gamble that
this batch of political entities are the ones that will make it. Probalby better to see if the Republic will hang together before throwing in with them.