I finally tried a Paladin. I had not realized that they start with no direct offensive abilities. The starting buttons are a buff (click once per level), a heal (not used before you get rank 2 of it), and auto-attack. Then you get more buffs. While in the newbie area, you work your way up to one direct offensive ability, and you use it once per fight.
This means that, aside from renewing your buffs every 10 or 30 minutes, the entire Paladin newbie experience is walking up to enemies and right-clicking them (or hitting 1 once). Once they are dead, right-click to loot. Even when you visit the enemies that will aggro (red, not yellow), you can easily survive fighting three at once, so it is still right-click once per target. Once you get that offensive ability, you can hit that button instead of right-clicking or hitting 1. Again, one press, once per target.
Despite that, it is still somewhat compelling to crush your enemies with a giant freaking hammer.