You first. You don't believe there is an empirical basis for God yet you believe morality absolutely presupposes faith in the supernatural. Presumably, you also consider yourself to have morality. On what supernaturally-derived basis would you (presumably) believe Bob is wrong? and given that the supernatural cannot be objectively proven, how does that faith differ from a preference, on your part?
Faith also beats preference here in that, given the premise that it is good to reduce suffering and increase happiness, I arrive at the same conclusions about morally correct actions regardless of the time and place that my mind happens to exist in. I can align my actions to the right choice even if I was raised to prefer something else. A slave owner prefers that slavery exists; a utilitarian slave owner can see that that is wrong and free their slaves.
I don't disagree that theists lack empirical basis for morality, both because I don't think anyone does and because I don't believe there is an empirical basis for God.
But it doesn't sound like you have a morality*. It sounds like you have preferences. One doesn't decide one's preferences, and even if they did, they would need a morality to do so rightly. This suggests that your being a good person is strictly luck of the draw. If my friend Bob the sadist says he loves it when people starve, would you be in the right to tell him he's wrong? On what grounds?
*Don't take this the wrong way- I don't mean to insult you, and I fully expect you do have morality. I'm only criticizing the argument here.