Said No Evil God Ever

There are dozens of campaigns that begin with the first level characters coming into conflict with some minor followers of an evil god and end with the new epically powerful party slapping around the evil god that sent them down the path to heroism. As the evil god lies in a puddle of their own divine fluids, weeping sadly, they have to wonder why they didn’t just crush the low level party ages prior to the 3000 battles that elevated them from common sellswords to holy champions. Or, at the very least, not sent increasingly hard waves of minions and started with their best and most potent servants.