Sorry but this thread is full of fail and a load of BS to boot.
What Skoshi Tiger said is perfectly valid and lets be honest here the only aircraft that has a straight break is the hurri and if you have eyes you can clearly see that the aircraft has a weak point where the wing connects to the root joint but yes I would have liked to see some more visal damage in that break (See below).
post image wordpress
AND regarding the straight breaks in general well just take a quick look at the structure of an aircraft wing and you would understand why a wing would basically have a straight break.. the clues are in the ribs...

some of you guys clearly don't have a clue.
upload gif
See the break is running along the rib...
See look at the video REAL LIFE tell me how that is modelled wrongly FFS....
STAY TUNED AS I GATHER MORE EVIDENCE TO PROVE WHY AN AICRAFT WING WOULD BE EXPECTED TO BREAK PARALLEL TO A SODDING RIB.... WTF!!!
And before someone inquires about the spit wing aircraft had different internal structures, if i recall correctly the wing skin has more load running through it and so thats why a parallel break is not modeled.