I think the issues is most people now treat airlines like buses, they have a huge amount of variety in where and when you go as well as how often and what they pay.
Most self loading freight don't know nor do they want to know anything about the environment they'll be locked into for the next N hours, most want to sit down have a drink watch a movie etc... Its a Bus, get on get off.
They have no idea of the training that is involved in the people who are up front behind the bullet proof door (theya re just the bus drivers) or walking the Aisles (serve the food, serve the booze). They also have no comprehension of how hostile the environment can be at 30000ft, bad weather just means 'bumps' etc.
It comes down to respect, for the crew and the environment. Its the difference between a Bus driver and an ATPL Pilot. I'm not knocking bus drivers but theres a bit more invloved in an ATPL....