The girls might do this job just for the money, opportunity to travel, and cheap tickets for family and bfs, but that's no excuse to be unprofessional when they are on the job. I have seem many times the cabin crew being disinterested and indifferent to the passengers (especially travelling staff). If part of your job is service from the heart, at least act like it, that's what you are getting pay for.
Some pilots may just do the job and stick with the company only for the money, but ALL pilots do it with the highest degree of professionalism (even when pissed off by the company). Otherwise there would be holes in the ground.