As many people have mentioned healing does feel like a more interesting role. Feeling wise it changes through the leveling range. To start out as a white mage I felt incredibly strong, sat back relaxing spamming the only healing spell I had "Cure". As I got to around the level 30's any mistakes made by people stood somewhere they shouldn't be made a noticeable difference and became more stressful. A lot of it depends on the tank and the rest of the party.