Considering that your using a healing main then yes it's particularly bland in low level 4 man dungeons. Healing doesn't really get difficult or even complicated til post 50. Additionally, your other class that you leveled is Arcanist, which is similarly bland until you get summoner or scholar unlocked for the extra abilities.

My advice would be to try to stick it out til level 50 then get into some harder content before labeling the game as boring. It's not until those fights that your decision making is tested.

That being said, this will never be an action game. You have several seconds of decision time in most cases, so that's not fast paced enough for some people. Healing in particular demands a knowledge of later fights so you can start your casts at the start, or even before, large hits to your tank. I play tank quite a bit and a good healer is fast with his decisions which allows me to be more aggressive.

tl;dr: Give it to level 50 or so before you make a decision on it. Should only take your a week or two which is within one month of subscription.