There is literally zero chance the golf courses would be built upon. They would take more land in the event of a war, excepting possibly on the occasional small island (i.e. Diego Garcia).
That said, you Americans are fucking crazy. There quite literally is nobody on the planet with the capacity or interest to actually threaten your territory in any meaningful way. You have massive oceans protecting you from most major powers. You outgun the next 10 militaries combined, most of which are allies.
You could, quite handily, cut your military budget by 70% and still be 100% certain that no significant military power will ever threaten the actual territory of the USA, even the far flung places like Guam.
If you had spent even 1/3 of that budget on education, health, SCIENCE, you would have a fucking paradise of a country to live in. You would absolutely dominate the tech, energy, health sectors in the world. You would probably have a viable colony on Mars and a growing asteroid mining industry. Instead you project power all over the world to no good effect, you have horrific poverty and deprivation within your own borders. The arc of your country is downwards, everyone but the rich is sinking in mire, and you are entering the typical late stage of an empire before the fall.
It's such a goddamn tragedy.