USA consumes too many resources from the world. Something between 24 and 30 percent, depending on the category, while making up only 5 percent of the world's population. As other countries want to raise their share, and the USA wants to keep the status quo... conflicts arise.

That's why the US Government can't just "stay at home vs. making new enemies all over the world all the time?".

Imagine for a moment what would happen if they just stayed at home...

The simplified version:

- US industries would have much less resources for production. Imagine a drop from 30% of wold's energy consumption, to 20% - 15%. Power shortages, industries closed.

- Prices on raw materials, would raise, because other countries would demand to increase their share. (More demand -> higher prices).

- Local prices would raise even more (lower production -> higher prices).

- The economy would enter in a deep contraction and depression.

- Large layoffs would be common. Unemployment would reach new heights within the country.

- Social discontent would be too dangerous in a heavily armed country.

- Protests and more protests, demonstrations with large numbers of people claiming for actions.

- Police is ordered to suppress the demonstrations. Violence emerge. Sooner or later, a protester dies, unleashing more fury among the people.

- Larger and more radicalized demonstrations are organized.

- Eventually, the government falls (as happened in many other countries in the last few years).

That's why US troops can't just stay at home and grow flowers. Sadly for the rest of the world, changing the status quo will take a long time. And it's not something possible to do in just a few years. Any attempt in doing a drastic change would end up in violence and possibly war if done by a foreign entity.

So, sadly, more hate to the US Government will keep extending around other countries for a few more decades.