Actually, a pretty simple and servicable morality can be derived from simple scientific principles:
1. I have no rational reason to believe that anyone else's essential needs as they relate to other people differ significantly from my own. I want other people to help fulfill my needs, therefore I should try to help fulfill theirs.
2. The universe is a closed, finite system, which means that the things that I do, "good" or "bad", will ultimately cycle back around to me. Therefore, I should do things that I perceive as "good", and encourage the same behavior from others.
and 3. I have no rational reason to believe that any other plane of existence exists. Therefore, I should endevour to optimize existence in this plane for myself and others, and encourage the same behavior from others. Also, any matters of redemption or justice for transgressions against fellow living beings must be dealt with personally and responsibly, without expectation of intercession from an unproven and scientifically unlikely deity.
But for all that, Jesus still has His place. When all else fails in a situation and there's literally nothing anyone can do, a prayer may make one feel a little better - which is enough of a reason to do it, whether Anyone is really listening or not.
My father was a devout athiest - and he still prayed when I was very sick as a child. There's some truth to that bit about "no athiests in foxholes".