Yes because eliminating people who plan and execute terrorist attacks on us, declare war on us, plan and execute terrorist attacks on other countries, harm their own people, both physically and barring them from basic human rights is a terrible thing for this country to be doing.
The cost was great, but what cost would we be facing if we left Afghanistan as it was? Do you think bin laden was wrapping things up after 9/11?
Did you give a damn about Afghanistan before 9/11? Please don't go on about human rights abuses when we sat there and supplied the fucking Taliban to fight the Soviets and then sat by as they raped and pillaged a country with our support. Where was your indignation then?
This "War on Terror" crippled us and sentenced a generation of soldiers to languish in shitty VA hospitals for the rest of their lives. In order to avenge the 3,000 dead from 9/11, we sent our men and women into a meat grinder. How many blown off limbs, mangled bodies, and body bags will it take to satisfy your blood lust?
Who won this war? Fucking private military corporations, arms dealers, and vehicle manufacturers.