It's amazing how many don't understand that for raid guilds, DPS Meters are nice. But when they get used in PUG settings, be they group or raid, the ******baggery comes out. If someone doesn't like meters, but the guild they are trying to join requires using meters and makes observations on the player regarding meters, then find another guild. When joining a guild, it's their way or the highway.
As for the don't like em, don't use em crowd:
If not using them could keep PUGs from turning a player into a number, then it would probably get more play. Just because you choose to not have the add-on installed doesn't mean you won't be subjected to as much scrutiny as if you did. From my earlier example: 5% less DPS from one player in a 10 man raid(meaning 5 DPSers) will make a 5 minute fight last just over 3 seconds longer. 10% less DPS from one player will make it last less than 7 seconds longer. Really, harping over miniscule differences doesn't help and can easily hurt the community.