Why are side sticks unpopular in sailplanes

At 06:12 20 February 2017, wrote:
Are the differences in jets documented? The Saab Gripen has a
center stick
for example, despite being newer than an F-16.
Russians also standardized center stick.

Sure, they are documented. You can Google it. Stick location comes
down to manufacturer, engineer, and pilot preferences. Like I said, if a
fighter pilot takes combat hits and has injuries, then a center stick is
more accessible by either hand. On the flip side, if you are flying close

formation and maneuvering, the inflating and deflating g-suit on your
legs can cause one to bobble the stick if one uses one's thigh as a
forearm brace. (allows one to make very small corrections using the
wrists and fingers alone without moving the entire arm) That's why
the Blue Angels don't use g-suits. The side stick in this case has a
retractable forearm brace that is attached to the side of the cockpit,
which provides a rock-solid platform for one's forearm... Lockheed
products (F-16, F-22, F-35) have side sticks. Boeing / MD products
favor center sticks. As far as I know, all of the fighter side sticks
are mounted vertically with a center-up neutral point. Most (if not all)
are "fly by wire" and thus have pressure sensors embedded to sense
forces applied. This translates to maybe only 1 cm of actual stick
movement compared to a glider with manual controls (thus big control
stick deflections to incorporate into the cockpit design) and a stick that

has a neutral point laying on it's side ~50-90° to it's left. In a glider

cockpit, one would lose all of the space saving benefits of a side stick if

one mounted it vertically.
RO