I Think This Thread Is Off Topic.....
The original poster asked why people posted photos of their cue (s)' butt, i.e., sleeve. WHY?........The answer is obvious............DUH?
If you want to talk the importance of the shaft to a cue's playability, these posts are right in line with that. But if you return to the aspect of posting a photo, the answer is painfully obvious.
Aside from the cue shaft having a collar that the cue maker either completed simply or ornately, pictures of shafts and ferrules are pretty much all the same and .........BORING.
Pictures of the cue butt should compliment and coincide with the cue-makers's design of the forearm ranging from plain ebony or cocobolo wood butts, or some other type of exotic wood, to simple ivory Hoppe rings or veneers or windows to ornate, complicated designs with veneers, decorative inlays and other type inserts.
Look at the cue's artistry from the forearm design to the completion point which is the cue's butt sleeve. Even the addition of an ivory butt cap versus a plain old delrin version adds a touch of class and besides, ivory does look better than resin material anyway.
If you have any doubts or reservations, take a really close look at a ivory stitched Szamboti collar design or even better, closely examine a cue made by Ed Prewitt who's heralded for making some of the most gorgeous collar designs imaginable. His cue workmanship is true artistry at the highest level.
The cue butt is the completion of the cue's overall design and personally speaking, photos of any cue without also including photos of the cue's forearm is like trying to make a sandwich without bread.....kinda incomplete. And the skill used to lathe turn a shaft is far less complicated than the inlay workmanship in cue butt sleeve designs. I mean after you've seen some of the Bert Schraeger cue butts or some ofTad Kohara's versions up close and in person.......OMG!
So that's why photos of cue butts are more popular...........................Back to the topic of cue shafts and playability, the single most important aspect or element in any cue shaft is the type and age of the wood selected..................."Everything" else evolves from that, i.e., shaft size & taper, ferrule composition and ferrule length, cue tip brand and hardness, and the shaft joint/collar specs, i.e., wood to wood, piloted joint, phenolic, steel or ivory, etc. All that comes into play but first and foremost is the wood used to make the shaft.