There's many reasons why people wouldn't want an LD shaft.
The two most common and likely are
1) a lack of feel, a hollow feel to the hits.
2) Use BHE or a derivation there of and like a conventional bridge position.
Let's take a look at the advantages and disadvantages of ld shafts versus conventional.
Advantages:
LD shafts allow for more minute adjustments for use of side spin;
deviations are therefore smaller which in many circumstances gives a wider margin for error. Particularly for people who have less than stellar eyesight or visual spatial acuity.
Disadvantages:
Hollow feel, lack of feel;
stroke flaws on tighter tables will be more pronounced if not bridging at natural pivot point. Pivot points are farther back on LD shafts, so bridging at that point is rare.
Conventional shafts:
Advantages:
natural pivot point is closer to conventional bridge lengths (possibly why bridge lengths have traditionally been taught at those distances). This will mean that swiping or wrist pulls that are unintentional are more likely to result in the ball traveling at or close to the original aimpoint.
great feedback, feel. This is also apparent to exist in grades as denser shaft woods are typically thought to provide better feel. Bowling alley wood, old growth wood, etc...
Disadvantages:
If not bridging at the natural pivot point, or not being aware of the pivot point and what changes deviations from the pivot point make, stroke flaws are exacerbated in comparison to LD shafts.
Greater deviation in non side spin aimline to side spin aimline, which can result in greater difficulty in applying sidespin effectively and consistently.
Ok, so those are some of the advantages and disadvantages of both LD shafts and conventional shafts.
There are designs and things that can mitigate the problems of both or either.
I am currently using a conventional single piece non-laminated shaft that I have modified with my own LD shaft design (this is separate from and from before my tip designs) that lowers end mass while still maintaining a natural solid center shaft hit.
There are other designs used by commercial LD shaft makers like OB in their classic and McDermott in their I3 feel shaft that have similar results.
This only mitigates the feel factor though, so for those that want to use conventional shafts for the BHE benefits or the stroke flaw benefits, this won't help them.
Regardless of what tech you use, it is important to become aware of where your shafts natural pivot point is and how to use it to best effect.
Dr. Dave's site provides information on how to find it and what uses it has.
Jaden