I was discussing this with another paladin and I'd like to hear your opinion.
If you're knight of the chalice, epic has a lot less evil outsiders than pre-epic end game. If you're defender of siberys, well, AC isn't generally the way to go in epic. (Comedy hunter of the dead option.) In any event, you'll be fighting a lot of neutral enemies such as rats, hyenas, scorpions, mephits, etc., where the paladin capstone and smite evil won't be effective at all.
On the other hand,
Divine might, divine sacrifice, zeal, and divine favor all work on neutral enemies. A paladin is likely to have higher saves than any other melee class. There still are a bunch of evil outsiders in epic (though it would have been nice for kotc to apply its damage on ranged attacks vs Lailat) and lay on hands has saved my life a bunch of times.
What are your thoughts?