That is correct, against ISIS we need ground forces. Airstrikes alone is not enough. USA and Obama created this abomination, their meddling in the internal affairs of the middle eastern countries caused shift of the balance and brought extremist to power. All because of the power play and greed for oil and spoils of war and then contracts made for reconstruction of destroyed cities... So now USA should finish this, once and for all.
The United States toppled the secular Saddam Hussein regime, and installed a puppet government, which was biased towards the Shiite Arabs. This in turn resulted in discrimination against the Sunni Arabs and the Kurds. The Sunnis had enough, and they allied with the most powerful force which was fighting against the puppet government. Unfortunately, this "most powerful force" turned out to be the ISIS.