Crimped terminals are easier to learn.....
Thats probably the main reason why so many in aviation use it. I can
see the average person trying to solder with a clunky, 100W, steaming
iron and doing a bad job. With crimping there is "little" to learn. But
soldering is hardly a dying art. Zillions of hams, electronic buffs,
use it. A decent temperature controlled soldering iron with a little
practice will prevent wicking past the terminal into the wires - and
not really a problem in most cases. Cold joints can be inspected and
redone. Two big reasons for soldering: 1. Vibration - a real problem in
aviation, promotes crimps loosening. 2. Oxydation/Corrosion, especially
with disimilar metals - seen lots of corroded crimps while soldered
terminals are still holding.