[wat10000]

This story is a good example of one major reason: trains are way more robust. Imagine a similar catastrophic fire in the cockpit of a high speed train. Worst case, you hit the emergency stop and then evacuate the train. The only person who would be at risk would be the train driver. Have that fire in an airplane and everyone on board dies.

This incident wasn't a terrorist attack, but the same idea applies there. The Lockerbie bomb, for example, was pretty small. Setting it off in a train might have killed some nearby people, but that’s all. But set it off in an airplane and you can kill hundreds.

[masklinn]

> Worst case, you hit the emergency stop

You don't even need to do that, because most trains and pretty much every high-speed train has some sort of dead man's switch, so the driver leaving their seat would automatically enable emergency brake in short order as they would if the driver had e.g. fallen unconscious.