Nukes and hypocrasy

Has anyone ever thought about how the US is always trying to regulate who can have nukes and who can't. Isn't this rather hypocritical. Aren't all the other countries saying, "hey if you guys get to have nuclear missiles, then why can't we?". Which makes alot of sense. Why isn't the US setting the example for other countries by disarming their nuclear warheads? Obviously this would leave the US open to attack, and is very risky. But a good show of faith on the US's part wouldn't be bad and may produce some good results in other countries disarming.

just a thought I had today...