You blow a lot of time waiting , or pay $ or both on changes. I had to change a flight on United a few years back, Cost $140 change fee and took 15 minutes ( was transferred to a second reservation call center somewhere offshore who did the actual re-booking.
Longing for the good ol days of expensive regulated air travel.
Half empty planes, change flights at the gate or even transfer to another carrier at the gate without charge , just gave Northwest Orient my co.travel dept. bought Western ticket and boarded Northwest immediately , often with free upgrade to first class.
“The finance industry is 5% rational people and 95% shamans and faith healers.” - Charlie Munger