Why is it so hard to think longer term? What's good for the world is often great for the United States. Catching and quarantining this in time would have saved us from lots of deaths and a almost certain recession coming up this year.
That's to prevent the current situation where in game theory terms, we're being the sucker and so it's in everyone else's best interest to leech. We need to reach a new nash equilibrium where everyone is contributing together (which is eventually more optimal for everyone involved, despite the short term hit).
I understand the need for assurance that those dollars are effectively working towards the intended goal, but assuming you are a sucker for paying the bill is only right if there was nothing of nutritional value to you in the menu.
So I guess the question is about working the data and crunching the numbers to know whether there is or isn't impact on your own economy and the welfare of your population, and not about not feeling like a sucker on the supranational ego scene.