Parsers are a great tool by yourself for min-maxing your damage output, and great in a group if you're not afraid of peer review. Peer review is how you learn how much you can improve, being against it is being against learning.

This is a pretty tired debate so I leave it at that. My mindset is always focused on improvement and being the best I can be at my job, some people don't care about that so what's the point of preaching. At the end of the day parsers will always exist one way or another so I have no stake in this matter.