Why start a war intending to lose?

"Top US military commanders were recommending against a full withdrawal of US forces from Afghanistan, advising to try to cement a peace agreement first, but US President Joe Biden did not share their concern," reported ANI. Biden thinks that he "can guard against the risk of a new terrorist danger in Afghanistan by maintaining warplanes and counterterrorism capabilities at bases outside the landlocked country". "Current and former military officials say, however, that the lack of a small but capable military presence in Afghanistan, including surveillance drones, would greatly complicate any US effort to project force from air bases in the Persian Gulf, aircraft carriers and possibly bases in central Asia. Even protecting the US Embassy in Kabul, they say, may prove to be a challenge." Former President Donald Trump praised the move as a "wonderful and positive thing to do", CNN. Barack Obama praised the plan. He would. "In February 2009 newly elected US President Barack Obama announced that US combat forces would be withdrawn from Iraq by the end of August 2010, with the remaining troops due to pull out by December 2011," Britannica. "On December 15 the US military held a ceremony in Baghdad to formally declare the end of its mission in Iraq, and the final US forces departed before the end of the year." Obama described ISIS, now called Islamic State, as "junior varsity" and then had to send US troops into Iraq again, after ISIS started executing American and European citizens. "From the fall of Saddam Hussein in 2003 to the present, the United States has never had a workable grand strategy for Iraq or any consistent plans and actions that have gone beyond current events," wrote Prof Anthony H Cordesman. "At the same time, the Department of Defense has reported that it has spent over $765 billion on the Iraq conflict and the fight against ISIS as of March 31, 2019 -- and this is only a fraction of the direct cost. There is no clear stream of reporting on State or USAID spending, but it seems to have reached another $100 billion." The Iraq problem started on 2 August 1990 when Saddam Hussein invaded Kuwait. This led to the first Gulf War when the then Prime Minister of Britain Margaret Thatcher told then President George HW Bush not to go "wobbly" on her. The Afghan problem started in December 1979 when the Soviet Union invaded Afghanistan. The US under President Ronald Reagan immediately started helping the Afghan Mujahideen with arms, routed through Pakistan. He even met with them in the White House. Following Soviet withdrawal Afghanistan descended into civil war from which emerged the Taliban. That led to Mullah Omar and Osama bin Laden and the attack on the twin towers in New York on 11 September 2001, remembered today as 9/11. From the very first moment in office Biden started reversing Trump's policies on almost everything. Why is he following Trump's promise to withdraw from Afghanistan completely by 9/11 this year is a mystery. The Taliban see this as a defeat for the US. They intend to take over the entire nation and impose Sharia law. Not just the Taliban, everyone from Iran to Syria to China will see the US as a weak defeated power. Executing Saddam and Bin Laden may have won elections but are pointless if the US keeps accepting ignominious defeats. Biden has 4 years to find out.