Ordinarily, I know very well that Skymiles are the Zimbabwe dollars of the frequent flyer world. I'm contemplating several large purchases from Staples, and can earn 2 miles per dollar from AA or Delta. Currently, I have 1.4MM RDM on AA and 252K RDM on Delta. I generally use miles for F and C travel for myself and my family, and for F, C, or Y to support (typically) young adults in my church go perform mission work in far flung places, including Haiti, New Guinea, and Central Africa. I would not mind getting to 300K Skymiles to enjoy the apparently decent availablity of C awards on Virgin Australia, either for myself, or if more young adults choose to go to New Guinea, where my church has an ongoing mission relationship. I'm even contemplating shifting my idine earn to Skymiles. Am I crazy, or do the above circumstances justify such choices?