After reading all the top-rated comments here, I have to think that the Slashdot crowd has given up on evidence-based solutions to problems.
From the TFS: "Reducing the availability of highly lethal and commonly used suicide methods has been associated with declines in suicide rates of as much as 30%-50% in other countries (PDF)."
Who said anything about forbidding suicide? They are just talking about reducing the availability of easy routes to suicide. I just don't understand why anyone would be against that, as it is not impinging on anyone's rights. The only thing it does is to help prevent someone from making a rash decision while they are not thinking straight.
It's a little bit like IT security. You can't stop the people who are really determined to get to their objective, but you can stop the casual attempts. In this case, you will give people a chance to think twice about this very ultimate decision.