I already knew the failed troll reason.
Anybody else?
Because when they travel to France or Brazil or to try and secure the 2016 Olympics for Chicago travelling to Copenhagen, or pick up an unearned Nobel prize, or even domestically, they spend exhorbitant amounts of taxpayer dollars on frivolous luxuries that previous presidents and first ladies did not.
And because of their vocal scorn of such luxuries by others prior to --and during-- their time in the White House.
They call for others to sacrifice while they never pass up any extravangance.