Does it seem like we often do a lot of bodyweight workouts?
We do. I want you to realize how big of an impact such "simple" exercises can provide.
As you've probably felt, those workouts can really make you sore...so you know that are challenging. Challenge creates good stress to the body and therefore creates positive changes.
Another reason is that I want you to remember that when you are training on your own, that you don't need equipment. Missing a boot camp workout, or not having equipment, is no excuse to skip. You've got all the equipment you need with just your body weight.