Bucking Bar,

The 737 is senior for a number of reasons. Not everyone wants to fly long-haul international. The 737 has the best trips in the system. It's all about quality of life. That is why it's senior.

I'm middle of the pack on the 737. I can hold international on larger aircraft in my base. I choose not to because of the lifestyle the 737 affords. Guys senior to me aren't going anywhere, either. It's all about lifestyle.