Doug McCrae said:The primary resource is the action. Deciding what to do with that resource is a form of resource management. 3rd ed has done a good job of making combat interesting for non-casters, I'd like to see them go even further down that road.
Correction: The primary resource is the action in combat.
Abilities with unlimited uses lend themselves quite handily to abuse outside of the initiative chart, where actions are a greatly devalued commodity. This is the very reason why a character with 100+ HP can be brought back to full with a crappy little CLW wand after all.