Well, the jobs created for building a single structure are only temporary. With a Forever War, though, we have sustainable employment with a constant need for new hires! Think of the children!
The trickle down economics affect is really quite amazing. All the PTSD counselors, student loan officers, and lobbying positions, that this generates really makes it a no brainer.
And don't forget Hollywood which makes an insane amount of money just to make you feel like you were there.
You have to keep the thing painted, though, and wash the windows. So there would be plenty of forever jobs.
Yeah, but the defense industry can't charge the firm that does the maintenance $1500/gallon for regular paint.