The share of the European countries in supporting NATO has been higher than the official numbers.

For instance, when the East-European countries have been admitted into NATO they were forced to pay dearly for this, with many billions of $ for various lucrative and overpriced contracts assigned to some well-connected US companies (e.g. Bechtel), either for various infrastructure projects or for military acquisitions.

Those billions of $ do not appear in the US budget, but they have enriched certain US businessmen.

It is normal for a regular US citizen to believe that NATO has not been beneficial for himself/herself, because this is true, but what regular citizens are not aware of is that NATO has been a great source of profits for some US citizens who are more equal than the others.