Trident - the reckoning

So the inevitable renewal of the Trident missile system - supported 409 MPs to 248 by the House of Commons - has updated Britain's nuclear deterrent, protecting us from 21st century threats, investing billions and giving no reason for any rogue state to suspend their nuclear programmes. On the face of it and with strong arguments, renewal makes sense: Britain is a potential target for any nuclear nut, we live in uncertain times, proliferation exists in many respects unchecked, and our status internationally depends on it. Britain is not a demoralised South Africa of the late 1980s or a coerced Libya of 4 years ago; we are Great Britain, former colonial overlords / the United States right hand man / a watchtower for global governance. Most states would consider Britain a naive laughing stock if it gave up something oh so powerful. Renewal was never going to be unrenewed, but at same time renewal or non-renewal isn't really the issue.

Historians will probably pinpoint about 2 or 3 years post Soviet collapse as a point where something approaching unilateral nuclear disarmament was possible. That window is long gone, French tests in the mid 1990s; Pakistan - India nuclear brinkmanship; North Korea's status seeking detonation; the list will continue. Pandora's box, doomsday countdown, armageddon: destruction has plenty of spiritual evocativeness - peace is a quaint lost snapshot of wishful thinking.

Besides this doom, the politics is also cagey: Blair relies on Cameron; Brown will rely on Cameron; Campbell relies / will rely on the Labour backbenchers. The electorate will rely on whoever has the finger on the button to not do the wrong thing. Blair has another tick on his legacy card. Any angle make this situation seem worse.
For the record, I oppose all nuclear weapons and any means, intention or capability associated with them. But I sadly admit that this is something that is going to be lived with and coped with rather than diminished. I am looking for some solutions, any suggestions welcome. As if this isn't bad enough, an even greater crisis has just erupted - Blue Peter admits that it lied to its viewers over the result of a phone-in competition. If the bastion of youth TV educationalism cannot be trusted then what future does mankind have?