It’s easy to say: “other people do things because of pressure, I do things because I want to.” But that kinda oversimplifies free will, power dynamics, and other similar concepts. Why is charity rewarding to you? Because someone gave you a pat on the back? Couldn’t we boil it all down to extrinsic motivators? Some people might not feel good “giving away” their time to charity. You don’t feel good having kids. It’s all perspective.