Wedging healers into a pure healing role may have some advantages.

[Orbus]

Edit: I wouldn't mind needing to spend more time healing. I want to be engaged in the fight 100% of the time. I'm not bothered whether that is healing, dps, or a mix of the two.

This is my feeling on playing a healer.
I will always dps when I can, and heal when I must because that is always priority #1 as a dead player has a dps of 0.

But I feel there's a problem with boss encounter design when as a healer I can dps uninterrupted for upwards of 90%+ of a fight (unless someone screws up) because the only thing it challenges the healer on is how many off globals in your disposal.