Originally Posted by
vredstein
In many ways, a double-butted spoke will be more durable. Spokes break at the threads or elbows. The threads and elbows of straight and double-butted spokes of the same gauge are the same. Butting allows the spoke to stretch, absorbing stress, where a straight gauge spoke transfers all the stress onto the elbow. Straight-gauge cost less, and simplify the build since they won't twist as much once you get close to final tension.
Hmmm ... as our favorite Vulcan would say; "logical."
Chris