Because the Israelis aren't nutters. Next?
"Pakistan got nukes and we lived with it."
The Pakistanis aren't nutters, either.
"Who is to say the United States or Russia should have the bomb and not other countries?"
We're not nutters, and neither are the Russians (with some notable exceptions on both sides, none likely to get anywhere near the button).
"Iran has promised to use its reactors for peaceful purposes..."
:-D )))
"The Pakistanis aren't nutters, either."
Huh? They're as fundamentally Islamic as anyone else in the Middle East and still practice sharia. Only through a military coup was Sharraf put into power. Once he departs, some maniacal "Ayatollah" will take over and have nukes at his disposal.