The astronomical funding required to replicate our Cold War arsenal does not square with the security threats in today's world. Nor will our conventional forces be able to withstand the cuts necessitated by the price burden of these nuclear delivery systems.
No one in a position to make the decision will cast aside the triad tomorrow, or the day after, but doing so should become a serious part of the discussion of how best to reduce, and ultimately eliminate, nuclear weapons.
From the latest news, you'd think America has turned the corner and is on the road to recovery. Far from it. There are major, structural deficiencies in our system that point in very negative directions.