I'm one of those that tends to prefer a cold mudhole over no diving, so my kneejerk answer is "no." But that's not quite true. The only reason I'd dive in truly zero vis would be to recover something important, or tighten or loosen an important nut or something like that.Jarrett:do you have limits on what you will dive?
I can remember a dive when the Lovely Young Kat & I got to the bottom and we could see each other's faces and nothing else, not even the anchor line we were holding on to at arm's length. We aborted that one, as our objective was to see the critters. On the other hand, one of our most delightful dives was in three foot vis, where we worked slowly along a section of wreck gunnel observing the little stuff - took nearly an hour to watch the show along about ten linear feet, a few inches at the time.
Bottom line: the vis/temp that'll cause me to abort a dive depends on many things, and can approach zero/icy - but in general I'd say I want about three feet vis (temp's a matter of exposure suit and available after-dive clothes) for most dives.
My first choice is for decent vis and bathing-suit warm, though... like last weekend in the Gulf
Rick