Is $18K a year worth it - on top of your current salary - to get sent to some shit hole where you'll get tax free, hostile fire pay, hazard duty pay, and family separation pay? If you're going to bitch about compensation for going to a shithole, this argument doesn't really cut it - you actually make out like a bandit.
And as far as Obama taking your money, I facepalm in your general direction. It was 25K cut down to 18K way back when I took the bonus (and was spending 365 in a shithole) when Bush took his cut.