I have to say that recently it has been an absolute pleasure taking on new clients who have previously not had experience or at least regularly used weight training as part of their exercise regime. There have been many people who have previously used classes as their sole means of training. Seeing these clients strength and also their love of this type of training grow is incredibly satisfying.
Exercises classes can provide a foundation to a solid fitness level for sure. However, they can often lead to long plateaus with results. This is due to the fact that past a certain point it is tough to include the principle of progressive overload (to make it harder) and especially tough to measure that. This is why weight training offers that simple solution to being able to do exactly that.