Now we've gone past "difference in playstyle" to flat out saying people are bad for not doing it your way. This has been such a nice conversation so far, so please don't go there. If you don't want to DPS, that's fine. If you want to stop DPS'ing at 50%, that's fine. Don't try to tell me I'm bad because I pull more DPS than HPS, because at the end of the day we get through the dungeon, generally very quickly and with no deaths. There's always the odd instance where cleric stance won't turn off or I fatfinger selecting the tank and lustrate the DPS instead, but I'm only human. Thankfully, these mistakes are rare. The current expert dungeons barely require any healing, especially Antitower where you spend the first 3 pulls restricted to 3 mobs.
My fairy obviously doesn't do 100% of the healing, but she does do between around 60 to 75% of it, depending.
A good tank is what enables that type of healer DPS. I go with a Warrior friend that pulls as big as he can and knows how to use his cooldowns and self heals. Between front-loading Adloquium before the pull, buffs like e4e and Fey Covenant, and Virus on any big hard-hitting mobs in the pack it's quite possible for your fairy to heal through even big pulls with FI + WD and Rouse up. If your tank isn't using their cooldowns effectively (or at all!), you're obviously going to have to heal a lot more. If we start a pull with a front-loaded crit Adloquium, that's over 9k damage that the tank basically gets to laugh at; in the meantime, I'm using those GCD's to get Eos' buffs up and to start my DPS rotation. It's really not hard to do once you get a rhythm down.Even assuming you micro-manage every single skill in addition to being a perma DPS, unless your tank only pulls one group at a time (which realistically never happens unless they're new), there will be more damage than your pet can keep up with. It'd be like a weakened WHM that never uses Cure II and relies on Medica II regens instead.