It's your last day on earth...
... wouldn't it be kind of nice to sleep in, make yourself a nice cup of tea, and *then* hurl yourself in front of a subway train? Why on earth would you get up for rush hour and do so?
Is it a control thing? Is your last thought, "I'm going to die but in doing so I'm going to make these people late for work." I hate to disappoint you, but it's not that big a statement to make. By now we take subway delays in stride. Your suicide is up there with "the signals aren't working" or "somebody has pressed the security alarm".
Is it a last-minute decision? Were you watching the train pull in and suddenly thought, "Not. one. more. meeting." If so, I can kind of relate.
Do you get off on witnesses? I'm sure you have traumatized many. Others will just see you as a great story for their friends.
I always think it's someone's right to kill themselves. I've thought of it myself many times. But please - show some class. Be discreet and choose a less annoying method.