What do they get out of this?
I really think their formost motive is still sincerity. THEY BELIEVE!
Look at the atrocities committed in Nazi Germany by "good" people. THEY BELIEVED!
BTW -- No offense to people of German heritage. ALL nations teach their soldiers that it is "good" to kill people on the "other side", and they do it. Oh, and the clergy praise them for it. Oh, and JWs do it too, they just call it Disfellowshipping, knowing that God will eventually kill you (they don't want to go to jail).
In either case, JW or soldier:
You're fed a steady diet of propaganda and YOU BELIEVE.
All the other junk food is cut out eventually and YOU BELIEVE WITH CONVICTION!
You're convinced to do things that you don't really want to do (door to door; 15k trecks with backpacks) because it's for the common good and to support "the cause"; and because it proves YOU BELIEVE; and because it comes from someone with a higher rank (even God) and there will be ramifications if you DON'T do it; (100 pushups or birds eating your eyeballs)
You're proud when you're tapped on the shoulder and given a "higher rank" (Sgt. or MS) because you've been given commendation, because you've been seen as superior, because YOU have been given a gift -- a new privlege -- by those above (even God); proving that WHAT YOU BELIEVE IS RIGHT.
You step up you're pace; you're more motivated; you've seen the personal "blessings" that come from performing at a higher level than your peers
You're promoted again (Capt Elder); more recognition (from God), more commendation, more PROOF (from God) to BELIEVE that you are doing the right thing; better grade and more propaganda (only for the upper class officers)
You have higher authority (from God), even having to punish (reprove) a few weak people -- it will ultimately save their lives when they are in combat on the "front lines"; you have to execute a few bad ones even (DF), but you have been given (by God) authority to judge (JC), and YOU BELIEVE YOU DO IT WITH RIGHTEOUSNESS, and it will save a more other innocent lives.
AND SO IT GOES..............
It works the same way all the way up through Bethel, Gilead, CO, DO, Branch, and even GB, and eventually HEAVEN (for the finest few). I think they TRULY BELIEVE they've been handpicked through each and every level all the way to the top (still waiting on the Heaven level) and everything they do, every decision they make, thery thought they have IS FROM GOD! Yes, THEY BELIEVE IT!
MOST HERE WERE ON THIS TREADMILL. You witnessed it. YOU BELIEVED!
And I'd suspect most? or many? would have kept on believing if something or someone hadn't kicked you (or caused you to fall) off of the treadmill.
Or was it just me?