<font face="Verdana, Arial, Helvetica, sans-serif" size="2">JaredH writes:
After considering the other benefits that OP offers, and the fact that I was throwing away miles that I could use for those rare planned flights, I decided to join. </font>
Often it's easiest to use your OnePass miles for last-minute travel, since yield management often releases reward seats during the last week for undersold flights.
I've been able to save friends/relatives thousands of dollars when in need of emergency last minute air travel.