..........that's why now the airlines required hrs are so low.................like "Metroman" said Two crew, autopilot, good weather, own bed at night, "office hours", long sectors, quiet airspace, servicable aircraft, scheduled flying. I can take quite a lot of this without being tired.
...........................on the other hand other operators like the RFDS for Eg. require hrs well beyond the airlines..................simply 'cause it ain't a 9to5 office job ! At the end of the day if a 120 hrs is too much then go 'rest' elsewhere !
Capt Wally :-)