What is the rationale behind placing arrestor gear on a long runway? I'm looking at the obstacle chart and the aerodrome chart (pdf; source: Hellenic Civil Aviation Authority) for LGLM (Lemnos, Greece), which serves both military and passenger aircraft. 
The runway length is 3016m (9895ft), and, according to the charts, there are also &quot;Arrestor Barriers (nets) 75M before THR RWY 22L&quot;, as well as &quot;Arrestor Gears (hooks) 583M, 554M beyond THRs RWY 04R and 22L respectively&quot;.
Considering that arrestor gear can have operational consequences for civil aircraft (Skybrary link), apparently its presence is operationally justified for the Hellenic Air Force.
My question is
What could be the reason that arrestor gear is placed on a fairly long runway? The fighters operating from this base are, I believe, F16s and Mirage 2000s. Would a 3-km/10k-feet runway not be enough for such an aircraft, even if we assumed braking problems?
Note: I have been on the island many times as a civil aviation passenger, and the arrestor gear is always in place, so it seems to be a (semi-)permanent installation.
I can think of 4 reasons:

Pilot Training to use the cable arresting system
Rejected takeoff, fighters don't usually have reversers and may take long space to arrest
Under certain bad runway conditions, like ice, the required landing distance may be very high, and a military airport should work (ideally) under any weather condition
Runway partial unavailability, if part of the runway is unavailable, with an arresting cable system you can still use the other part. This is especially important during a war, when the enemy may damage half of the runway and you don't have time to fix it. Military airports are designed considering also these possibilities.

Source for 3 and 4: https://www.wbdg.org/FFC/AF/AFTTP/afttp_3_32.12.pdf