ppl should flash all the time...if they release a hardware update, it's for a reason.
it has to do with % of variability...they release it so it's more stable. Let's say there's an algorthmic error present in a mobo...sure you don't need to update if you don't care for it, but logically you should
example pdf you can read for my mobo:
http://downloadmirror.intel.com/14346/ENG/BX_1487_ReleaseNotes.pdf
just adds stability, so I do it