Are the Russian going to use the Fulda Gap to launch an armor assault? Probably not, but that does not mean that NATO lacks value in today's world. NATO countries sent troops to Iraq and Afghanistan after 9/11, and NATO does provide some "slack" in terms of resources for the DoD. Are all NATO allies equal? Heck, no. The UK and Canada (as well as non-member Australia) are still our most important and helpful allies, but NATO as a whole offers capabilities that the US would not have on our own, notably pre-positioned equipment and personnel. Flying DoD assets over and through Turkey is a lot easier than it would be if Turkey was not in NATO.