Since ISIS has a history of conducting mass executions of captured enemy soldiers, Candy...I can understand the reluctance of Iraqis to stand and fight against them.
The question you should be asking yourself is at what point do WE stand and fight against them? When they take the entire Middle East?
WE...being the US or WE being people who actually use the oil such as Japan, France, the UK, Spain, Germany, Italy, China, Singapore, Australia, India, Pakistan, Brazil, Chile, Argentina, South Africa, Portugal, Bulgaria, Poland, Norway, Finland, Sweden, Iceland, Canada, or Sumatra?
The question you should be asking yourself is if you'd be happy to send your kids over there (which I assume you're okay with endangering your kids for zero net gain for the US), why aren't the fathers of young Japanese, French, Spanish, German et. al. kids be willing to send theirs? l