They are landlocked. Some factions are communist. Their neighbors don't like them, so it is problematic establishing a base to support them. The US fought with them and established the no-fly zone over Iraq for them. They are hosed by their geography.
The reason Iraq was not partitioned was because the Turks objected to forming a Kurdish state.
Turkey has its own Kurdish “problem” bordering the Iraqi Kurdish region.
As I see it, Turkey should no longer be considered a U.S.. ally, since they have criminalized Christianity. Thus, they no longer get a vote.
Unfortunately, they will not be kicked out of NATO. As I have posted elsewhere, the EU wants to absorb the Islamic world of ME and northern Africa (and that is why the EU is anti-Israel).