Firing your own nukes would avoid this and give a country the overall advantage in a war. The problem with this is that the enemy could have no intention of an attack. This situation would bring about a war that was never supposed to happen, causing an uncountable amount of unnecessary death to both sides. Due to this problem, it has been the general rule of nuclear countries to not fire weapons until there is confirmation of a detonation within your own country. Miscommunications can obviously pose a large danger in this aspect because someone could report a nuclear explosion when in fact none ever occurred.
Many people think that disarmament of nuclear weapons is an overall bad idea.
They have many reasons for this opinion. The most common, and probably the most legit, is that nuclear disarmament is highly expensive and dangerous. The fact that it is more expensive to disarm a nuclear weapon than maintain an already constructed one is quite daunting. This is true of most things in life though. This has become the logic of most governments around the world today.