What makes you think that certain religious people don't have negative emotions?
I am speaking in approximate terms, just as OrphanWilde was. That does not mean never ever having a single negative emotion, just as I presume that he was not speaking of never having any emotions of any kind.
There is plenty of devotional literature which promotes refusing negative emotions and keeping the positive ones. And while I'm sure that it does not work for some people (as in OrphanWilde's experience), it does work for others. One reason I know it works for some people is that it did work for me for many years, when I was still religious.
What do LWers think about this concept? What do you think is the main rationale for this idea, and do you think it is a good policy?