Why can’t the US or other first world superpowers be the world’s police?

Wouldn’t the moral or right thing to do be for superpowers to aid or help out other countries that need it? Especially with these superpowers having advanced technology, military might, and nearly unlimited budget or resources relative to other countries?

The world is becoming more and more of a global society, where we know what’s going on everywhere across the globe, communicate and befriend anyone anywhere, and travel to anywhere in a relatively short amount of time.

Gone are the days of isolationism, where everyone kept to themselves because we didn’t know what was going on anywhere else, didn’t have the manpower or resources to do anything but help “our own,” etc.

Realistically, we already DO live in a global society and superpowers, including the US act as the world’s police in many instances.

The issue is what we put it and at what cost

Also, how we go on about helping or improving another country or nation.
Why can’t the US or other first world superpowers be the world’s police?
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Being in the military, specifically infantry, I can tell you that what more honorable way to serve than to fight TRUE injustices overseas? Enslaved and oppressed people?

It doesn’t have to be Americans we save, but just HUMANS.

Again, global society.

Why can’t the US or other first world superpowers be the world’s police?
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