What a libertarian would actually say is that it is an individual’s right to choose whether or not to come to someone’s aid. What if coming to the aid of another requires the endangerment of your own life, or the destruction of your own property? Should one be compelled by force to risk their own life, or their own property for the sake of another? The moral answer would be yes one should come to the aid of another, no matter the personal risk, but the actual question at hand is should one be compelled by law to do so – duty to rescue does compell you by force to come to the aid of another. Not all libertarians are of the same mentality as you describe in your comment.
What a libertarian would actually say is that it is an individual’s right to choose whether or not to come to someone’s aid. What if coming to the aid of another requires the endangerment of your own life, or the destruction of your own property? Should one be compelled by force to risk their own life, or their own property for the sake of another? The moral answer would be yes one should come to the aid of another, no matter the personal risk, but the actual question at hand is should one be compelled by law to do so – duty to rescue does compell you by force to come to the aid of another. Not all libertarians are of the same mentality as you describe in your comment.