Why do some people say that Obama is just "cleaning up Bush's mess" when Obama is repeating Bush's mistakes?

I've heard the assertion that we should give a Obama a break because he's just trying to fix the calamity he inherited from Bush. But, I don't think anything could be further from the truth. The single most fundamental cause of our current economic crisis is SPENDING. Bush caused our current economic calamity because he was a reckless government spender and Obama is perpetuating our current calamity because he's ANOTHER reckless government spender. Bush produced our enormous deficit and national debt by getting us into a gratuitous and irresponsible war in Iraq, creating a stupid government bureaucracy called the Department of Homeland Security, and spending all that money on bailouts, stimulus bills, etc., If Obama was truly trying to "clean up Bush's mess," as his supporters claim, he would try to abolish the DHS, try to get us out of Iraq, and take meaningful steps to balance our budget and make as many spending cuts as possible. But, has Obama tried to do any of these things? NO! He is just following Bush's footsteps of fiscal irresponsibility! Like Bush, Obama has started another war in Libya, while continuing the present war in Iraq, has spent just as much, if not more, than his predecessor, has supported more bailouts and stimulus bills, and has no intention whatsoever of making any spending cuts! So, why do Obama supporters continue to make excuses for him on the grounds of "It's all Bush's fault", when Obama is just another Bush?