Except WW1, WW2, Korea and Vietnam were all very costly and direct engagements. US involvement in foreign affairs skyrocketed because WW1/WW2 destroyed Europe

Except WW1, WW2, Korea and Vietnam were all very costly and direct engagements. US involvement in foreign affairs skyrocketed because WW1/WW2 destroyed Europe and created a power vacuum that we were eager to fill. If we didn't have these smart bombs we would just be involved in fewer but more bloody global conflicts.