The benefit of Warriors?

[Excellio]

Okay, so I have a friend who is playing a warrior, and he's kinda wishing he made a Paladin or SK instead now because it doesn't really seem like his warrior has any real advantages.

They can't DPS as well as other melee classes, they're supposed to tank and hold aggro, but it's tough to hold aggro when another player is doing wayyyy more damage than you are. They have more HP than other melees, I think, but that doesn't mean too much because it's tough to keep aggro. They don't have any spells like a pally, SK or ranger, and they don't DPS like a Rogue or Monk. So exactly what do warriors do better than any other class, and are they really practical for a player who can't afford to spend like 25K on gear?