Digging through old screenshots and I found this gem from the day WOTLK launched

i prefer the 5 man dungeons with all dks that happened until it was patched. Got a blood dk? well thats enough of a healer for me. Then you get 5 blood dks all in one run. We never needed to stop for any reason. I miss doing that.

I guess a holy paladin at the time will just kinda sit there. They didn't do damage and there was nothing to heal.