Do healer need to help doing dps? Especially cleric stance?

[FunkyBunch]

*experienced* healers should dps if there's little going on in the way of heals needed. Topping a tank at all times, every second, isn't very necessary if they're just being chipped away at, slowly. If anything, it just generates aggro while not contributing to getting rid of the mob.

I think it's the opposite. (Experienced healers should ALSO DPS, but learning is even more important for inexperienced healers)
If you are inexperienced you don't have bad habits and should stance dance as much as possible.
It's WAY easier to learn when you haven't healed before than after you've got 60 levels in and then start trying to DPS.
Your way of thinking might be why some healers never feel comfortable in Cleric Stance.

Did a few tanks die as I learned to DPS in my first few dungeons? You betcha they did.
But I'm a much better healer now and can stance dance at the drop of a hat in a new dungeon.

Now, in the Hall of the Novice it tells you to DPS when not healing, so you really should try the instant you get Cleric Stance.

Not using Cleric Stance "until you feel comfortable" would be like a BLM using only UI because he or she is not "comfortable" running out of mana.