I don't find tanking boring. Paladin is the 3rd class I've leveled.
I don't agree that tanking is boring. I started as a WHM and leveled SMN. But I had always wanted to be a Paladin too. Taking is interesting because you have to manage the monsters and the players. It's more responsibility than most people think. Smart players will listen when you tell them what you plan to do next. A tank has to constantly focus on maintaining emnity, rotating abilities, attacking monsters and group mobs.
And for bosses that spawn adds, the tank is the one that has to bring the adds to one spot in most cases so dps can use aoe them. I think the hardest part of tanking is that some people work against you. Like dps attacking before you or before you've got aggro. Or healers spamming Medica II or Regen. I'm not saying they shouldn't use those spells. But I've had healers get killed because when adds spawned the went right for them and then the healer kept running away so I couldn't get aggro or even hit the adds. Every class has it's responsibilities. But if tank was the easiest thing to do tanks wouldn't be the 1st to be blamed (and healers 2nd) if there is a wipe.
What's a downer is that I'm likely to get criticized harshly as as tank than as an SMN. Seems like dps don't get ragged on as much. On the other hand as a tank (2nd healer) I get more commendations by far. Also some ppl seem to think there is only one way to approach a situation. Even if my approach is just as viable they say things like, just do it this way, "everybody does". Just tank, that's all you have to do. Hahahaha