Subjective Morality

I had a conversation not long ago about morality. He said, Subjective morality exist, therefore, god exists. My answer was, NO. if morality is tied to a god, then, that’s not nature. Let me explain clearly. To me, I define Morality is the system by which we evaluate the consequences of actions to determine whether not to consider them good actions or bad, right or wrong. When someone says morality is subjective, he or she may be thinking morality is a thought from a mind to conceive. But morality is based on human nature and we evaluate our actions through well-being. Subjective morality is not contingent upon one mind. It’s about humanity. If a person is not talking about well-being, then they are talking something different. But if we are talking about the same values, well-being, then it’s no longer subjective.