That's because if the suiciders know that no one is going to
save them, they are going to have a nice death.
However, on the other hand, for terrorists, I'd push them down
to the tracks.
For suiciders case, if they were to saved, there will be 2
possibilities:
1 -> They cherish their life, since there were cases of
suiciders who survived ended up giving up on suicide.
2 -> Suicide in somewhere else / using other method.
For terrorist case, I may like to do so, becoz of <personal political and anti-religious
reason> , but do note that this is illegal as well. So
yes, they are bad, but pushers are no good either.