I don't know exactly what the deal is with India, but Karzai desperately wants US bases in Afghanistan and I don't know why we don't make the commitment to it -- except lack of strategic value?
No, we know well how valuable a foothold in Asia is in the strategies to deal with the looming threats from China, and Iran, and even North Korea.
We don't "commit" because part of the PR is that we have no long term goals for being in Afghanistan, etc, except ridding the area of terrorists and giving the Afghani people freedom to control their own future.