[PatrickHenry]

However, why do so many people use science as an excuse not to believe in God, because He cannot be scientifically proven to exist?

I've never heard any atheist say: "I don't believe in God because of science." What I usually hear them say is something like: "I don't believe it because there's no evidence for such a belief." Or words to that effect. I'll let the athesists speak for themselves.

[Dimensio]

I lack belief in gods because I have not seen convincing evidence for the existence of any gods.

Science hasn't provided any evidence for the existence of any gods, but then that isn't the job of science. I certainly can't say that science has completely ruled out the possibility of the existence of any gods.

[jlogajan]

I've never heard any atheist say: "I don't believe in God because of science." What I usually hear them say is something like: "I don't believe it because there's no evidence for such a belief." Or words to that effect. I'll let the athesists speak for themselves.

I'm an atheist. What you said is correct.