Go read this.
It is an eloquent post detailing a healer plight-and it also explains why I've been going nuts.
It would help, I think, if there weren't those couple of fights still in Naxx 10 where we "need" 3 healers. Then we could just bring two, and not be bored, and get cranky when other healers step on our toes because they, too, are bored.
I will try to do a post of my own later, but I had to share that with you.