Well, sort of sane, but when the whole world is insane, you look sane by comparison. As they say, you can't get the genie back in the bottle, but what is really insane is that anybody has nukes. We have seen what they can do. But the US has the unmitigated gall to say, "We can have nukes, but you can't" is beyond hypocrisy. You can't argue, "It's okay for us to have nukes because we would never start a war." In fact, there is only one member of that nuclear club you just listed who has used them against people. Right. The same one who says other countries can't be trusted with them.
And what have some of our brave USians here suggested we do if one of our enemies gets nukes? One said "Level them from corner to corner".
Somehow I remember something about one of the reasons for going to war with Iraq was because there was a brutal tyrant there who was ruthless in wiping out his enemies. Was that just because we don't want the competition?