You are the only one who says that. Everyone else, including Israelis, know that it is not possible to halt Iran’s nuclear drive, if they really want to have it. The best they can do is to delay it.
http://cns.miis.edu/pubs/week/040812.htm
Such an attack would likely embolden and enhance Iran’s nuclear prospects in the long term. In the absence of an Iranian nuclear weapon program, which IAEA inspectors have yet to find, a preemptive attack by the United States or Israel would provide Iran with the impetus and justification to pursue a full blown covert nuclear deterrent program, without the inconvenience of IAEA inspections. Such an attack would likely be seen as an act of aggression not only by Iran but most of the international community, and only serve to weaken any diplomatic coalition currently available against Iran.
Even if Natanz, Arak, and Bushehr were destroyed in a preemptive strike, Iran probably has duplicate equipment that can be activated and has the know-how to produce more, to pursue a more vigorous and unabated nuclear weapons program in the long term.