I believe I am more moral since I became an atheist.
Before, I followed a set of rules decided on by someone else. I didn't always think through the consequences of my actions, because if I was following the rules I figured I was fine. I was honest, law abiding and moral, in the traditional sense, but I didn't worry about the environment, social injustice or the consequences of blindly following my religious leaders.
I am still honest, law abiding and moral, but more importantly I think through the consequences of my actions in deeper ways. I realize God is not going to fix everything, so I have to do what I can to help the environment and make the world a better place. I don't follow anyone blindly, I think for myself. I am kinder, more tolerant of others and overall a better person.