I like having the vinegar on hand just in case. It is such a simple precaution it makes good sense. Glad to see you come into the discussion. Soapmaking is such a useful skill I hate to see anyone spooked off it. I havent made soap nearly as long as you have and I certainly dont know it all.Oh, and vinegar is great to have on hand, but I rarely need it. Just if you feel it start burning. My hands are still usually a little tingly after making soap!