Did anyone here skip taking a childbirth class altogether? If so, were you okay during birth or did you wish you had taken the class?

I'm due to have my first in August and my hospital offers a childbirth class (either three Thursday evenings or a 7 hour class on a Saturday). I'm contemplating not taking the class. The topics of the class I would take are said to include the following: Stages of labor/birth, signs and symptoms of preterm labor/labor, how to perform and importance of fetal kick counts, pain management strategies, cesarean birth, postpartum care for mother and infant, and PowerPoint presentation.