There is no such thing as "I have to". The very first story of humanity demonstrates that humans are given free will, no matter how dire the consequences of the choices may be. One does as one wants.

In the case of physical force, there is still no "I have to". There may be an "I am being physically forced to", but that is valid only in the case where one is literally being forced into some position - say a quadriplegic into a wheelchair,and even in those actions one may assert that the response was not of their own action.

There may exist dire, ethical/moral, or even existential consequences to our actions, which may create dilemmas for each of us, but ultimately the choice of response is ours alone.