they're never going to offer all of the classes in a major in the evening. In my major we had a required class that was only ever offered on TTh from 7:30-9am. Pretty stinking early for a college class. But there was only one teacher who ever taught the class and that was the time he picked to teach it.
I think people who want to work would do better working at night or doing the BYU-I Pathways program.