It's the uncertainty of train delays (in the UK) and your powerlessness as a passenger that's really painful. You get at least one of:

- delay announced increasing by 1 minute with every minute that passes

- no time given, just "delayed"

- trains that were delayed cancelled after 20 minutes wait

- except when you find another way, then they turn up

- additional stops, not announced until you're onboard (so useful to nobody)

- skipping stops/terminating early, again not announced

- announcements that the train will terminate early, only for the driver to announce he's heard nothing of the sort and carry on

etc...