Originally Posted by
Pilotpip
A large number of friends have the time and seniority to upgrade right now but aren't. Why? The overwhelming answer is to see another winter and learn. I think it's incredibly smart and shows how serious they are about doing a good job. ......... We're not all sitting up there to look cool. A vast majority of us are absorbing everything we can so we're safe captains down the road.
Only two reasons I know of a guy doesn't upgrade:
1. The upgrade will have a negative effect on his/family's QOL, now or in the future. (assigned base/schedule etc..)
2. He/she is concerned (read: afraid) that the attempt to upgrade may not be successful

, then see #1