It’s frustrating when you arrive at your destination two hours late because of missed train connections; it happened to me twice on holiday; contrary to popular belief, German trains don’t run on time (unlike those in Switzerland). But it’s nothing on planes.
Psycho Chicken has a real horror story of the sort of thing that happens to air travellers when things go pear-shaped. Imagine if Virgin Trains did something like that. You’d never hear the end of it.