Originally posted by TrashMan
Whatever you say, it allways cheper to upgrade older stuff than to build new one.
No, no it's not. Sometimes, yes, it is. Mostly though, it's not.
Think about the advances in technology the GTVA has developed since the Great War. Shields, advanced energy weapons, new tracking systems, new armor, plus all the shared stuff that was picked up from the Vasudans. In 32 years, the GTVA went from having plasma bolt weapons that couldn't hit **** to beam cannons that could take down everything from a fighter to a Demon destroyer. That's a lot of tech to try to shoehorn into an already old fighter/bomber hull. Be easier, and cheaper, to build a new one, from scratch, with all the tech already incorporated into it.
Plus, how many Athena's do you think were actually left at the end of the Great War? Think of the losses the GTA and PVN took during that war, do you really think the more primitive fighters, which were in highest numbers and on the front lines from day one, actually survived? The GTA needed fighters that could actually stand a chance against the Shivan hoards, so production of Apollo's and Athena's was likely haulted in favor of the Herc and the Medusa, the ships that could actually put the hurt on the Shivans. After that, there's no point in keeping the older fighters around, there aren't enough, factories have already been retooled to make better fighters, and their tech is out of date as it is.
In the end, there was no point in upgrading these ships, they were obsolute and nearly extinct. Scrap and move the new ships in as time permits. After 32 years, they were simply all gone.