US Air Force B-52 bomber crashes after takeoff, Edwards Air Force Base says

There were a few crashes where the cockpit crew ejected, this being one at London Heathrow.

https://api.parliament.uk/historic-hansard/commons/1956/dec/...

> It would be unjust to the pilot and co-pilot were I not to make it clear, in conclusion, that it was their duty to eject from the aircraft when they did. I am satisfied that there could have been no hope of controlling the aircraft after the initial impact. In these circumstances, it was the duty of the captain to give the order to abandon the aircraft and of all those who were on board to obey it if they were able to do so. Both the pilot and co-pilot realised when they gave their orders that, owing to the low altitude, the other occupants had no chance of escape, and they considered that their own chances were negligible

https://en.wikipedia.org/wiki/United_States_military_nuclear...

B-52 engine refurbishment is going to cost $15 billion for 70 odd bombers, or $214 million each. $750 million is current cost of B-21.

Well, the DC-3 is a fun example, because it wasn't pressurized to start with.

But no, normally converted freight aircraft are fully pressurized; it's more expensive and more intrusive to redesign the plane to have a cockpit pressure bulkhead than it is to just leave the whole thing pressurized. There are some exceptions like the Beluga, usually due to door design constraints (at some point, making a cockpit pressure bulkhead becomes easier than making a giant pressurized door). This trend in retrofits might change; flat aft-pressure-bulkhead retrofits are becoming a thing to increase cubic footage capacity, and at some point someone might decide that the effort required to engineer and certify a cockpit bulkhead would be worth some advantage in door design or cargo capacity in a broader sense. But for now, they're usually fully pressurized.

The main reason why planes get a second life in freight is that freight carriers have _way_ more options for utilization; they fly fewer hours overall, hold the plane until it's completely full, and utilize different airports and routes. A loud, inefficient plane is OK to fly twice a day between two fixed airports with no noise restrictions, but useless to a passenger carrier who wants to make four or five turns between whatever airports are necessary and doesn't have guaranteed utilization to cover the overhead - right back to your original point, which I don't think anyone was really disagreeing with.

Also not all munitions work effectively with it. A dedicated bomber enables things like MOAB.