I don't think it is a good idea, based on the fact you hurt the people left behind a lot..
And if people are gonna do it, I really wish they would think about the people that have to pick up your body. Killing yourself by jumping in front of a train is not cool.
Besides that, I do find it kinda weird, that we are forced into living (Tho some religions beliefs says otherwise) but we are not allowed to put an end to it yourself?
I just find that a tad weird.. even more so when are living in 'freedom'