I was just thinking that there is a third option. You certainly can do things you don’t need to or even d want to.
An extreme example would be all the various kinds of mental issues. Even phobias count. You don’t need to be afraid of balloons, nor do you want to. However, someone suffering from such a phobia just can’t help themselves.
Depends on the way you define “have to”. If we take the loosest possible definition, as long as literally anything makes you do it, you have to do it. Could be another human, laws of physics or even your own brain doing stuff you don’t want it to do. In that case, I agree with you. However, people usually aren’t that loosey-goosey with their definitions.
Oh, just realized, this definition also encompasses the case where you want to do stuff. It’s all in the same category at this point. People do stuff because they have to.