I'm having a tough time right now believing in any one mileage program over another. I am as close as I've ever been to going miles agnostic. Especially living in DEN where I pay a premium to remain with one program or another. I enjoy reading Gary and Ben/Lucky's trip reports with all their first class travel, but I find the flight the least interesting of any trip I take. I realize I speak heresy on a forum like this , but what keeps you wedded to your program of choice? For point of reference, I fly UA usually for work and DL for pleasure, but all three of my trips I have coming up are cheaper by huge margins on F9 (e.g., $700-800 on DL/UA and $400 on F9). At what point do you pull the plug on the mileage desire and just stick with hotel points? After all, in many cases that is the most expensive part of a trip.