What is clear is that survival chances in transport category off airport landings are good if you can get out quickly before it burns. The main thing is to try to land upright at reasonable speed, just like in any other aircraft and you will give most everyone a fighting chance.
There was the qantas 747 that ended up in the golf course in Bangkok, they repaired few once and retired it
At least the JAL 2 DC-8 flew for 32 years post accident and succumbed to the wreckers claw when it developed cracks, so I'd say the repair was worth it.