I don't like spinning classes because I don't like gyms in general. Here where I live, they require a contract membership for at least a year, are always too crowded, have terrible parking, and the instructors aren't as knowledgeable as they think they are. I do just fine at home, using my own equipment, DVD instruction, a pedestal fan, and my own common sense about what is right for my body, my personal limitations, strengths, goals, and fitness level. And I save a huuuuge amount of dough.