The US considers it in their strategic interest to maintain peace around the world. We are vicarious beneficiaries of that logic.

The same way that a farmer considers it in his pecuniary interest to grow and sell vegetables, and we are vicarious beneficiaries in that we have access to affordable food we can eat.

People like you see conspiracies where there is actually nothing but fortuitous alignments of interest. Like all conspiracy theories, it's merely ignorance of the basic incentives that make the world work, leading to hare-brained theories that sound dramatic but make no sense, couched in an air of being super special in your ability to see how the world 'really' works, unlike all those normie sheep. Yadda yadda. Juvenile and boring.

But hey, the US is almost certainly going to retreat from the world after the unpopular missteps of the current administration, so we'll get to see with our own eyes whether that produces a more or less peaceful world. Won't that be a fun and costly experiment.