Very few pet peeves since I've mostly become inured to many of the irritations mentioned above. I do get irked that nowhere in the chain of pipe information, except maybe occasionally on Forums, is any condensed, straightforward, non-commercial information offered to new smokers about filters -- the several kinds, the alternatives like adaptors, the possibility of not using them or adaptors at all, etc. I think many new pipe smokers buy pipes they may not later want, or be confused by stingers and the variety of filters. All this could be considerably clarified if not altogether explained in a few paragraphs. In fact, it is here and there, but not sufficiently to help most new or only occasional pipe smokers. Seems like needless stubborn misinformation by offering little or no information. Come on pipe makers and retailers, pipe clubs and shops. We can do a little better, eh? And yes, I do get tired of rattling on about it, but little is ever done.