thing about divine veil in most cases though is that it does not change what a healer will or will have to do directly after the raid wide aoe. so saving it for a major damage aoe doesnt really help unless its progression raiding and it might just tip the scales to a survivable aoe as opposed to a insta death one.

so in most cases its better to use it when you know a raidwide aoe is coming and divine veil will be enough of a barrier to allow the healers to ignore it and do other stuff instead.

anything other than raids its use is virtually unoticed by anyone, more so now that we auto activate it ourselves.