Originally posted by DocFrance
Yeah, I guess they just figured no one would notice... but here's what bugs me:

Why is Spira not in complete chaos? You'd think that with the world's main religion and government having vanished, it would take more than two years for everything to get back to normal, wouldn't you?
There is a fair bit of chaos, what with the fighting and power plays between New Yevon, the Youth League and (to a lesser extent) the Machine Faction.
And didn't Sin come crashing down on Bevelle? It would have taken longer than two years for them to actually remove the carcass, then rebuild the place into a monument of glory
Sin Landed near Bevelle, perhaps over a small part of the city. This can be seen in the FMV. A lot of dirt got flung over the city, but that's all. There was little to no rebuilding to be done. When Sin was finally defeated, it exploded into pyreflies somewhere over the Calm Lands, safely above and away from anything it might harm.