Fair enough.
"There's not hope at all." Hope for what?
I don't know if this life is all there is. I don't have any idea. I'm guessing that when we die that's it, we're just dead, just like it was before we lived. However, I am interested in reincarnation. Before I was born I... well... I have no idea what anything was like. I have no memory of anything before the age of probably 2 or 3, at least no cognitive memory. All I know is I came to be, a living, thinking individual. I was born. I have thoughts, I am me, I am a person. If this happened once, whose to say it wouldn't happen again. If time continues when we aren't alive - which I'm not sure it does or doesn't - then we may come to be again sometime in the future.
I could buy into that. I'm not going to base my life around it but I could see it as being a possibility. However, I have no evidence that such a thing happens. I have no evidence that suggests anything happens after we die, so I assume that nothing happens.
People say that's scary, that they prefer believing that there is a heaven. Sure, heaven is a nice thought. It's comforting, it's safe. It makes saying goodbye to loved ones easier and it makes the idea of ones own demise easier. However, that doesn't make it real. Even if I would rather believe in a heaven, I just don't.
Here's the thing about science; it's not correct about everything. No scientist will say "science has never gotten anything wrong". Science is constantly disproving claims in order to further identify the truth. Getting things wrong is a huge part of science, that's how we learn more. We test and experiment and destroy hypothesis' all the time. There is no faith in science. Faith is "belief and trust in the existence, power, and benevolence of a supreme being." Science and religion are two very different things. That's why we have scientists who are religious.
So why does science get brought up all the time when talking to atheists? I'm not really sure. It's been conditioned that they're one in the same, but they're not. Science is a very broad field of study with tons of subgroups. Science does not equal evolution, which I think - correct me if I'm wrong - you're mixing up. Not all atheists buy into the theory of evolution and many religious people do. I do, but that's not why I'm an atheist.
And let me just say this, although you probably won't believe me: not all scientists are socialists, and even less want to make the US a communist country. In fact, I have never met a single scientist who was either of those things (although there are probably plenty of socialist scientists in socialist countries and communist scientists in communist countries, but that's any person anywhere you go). Science does not have a political or social agenda. SCIENTISTS might, individual scientists who have their opinion like anybody else, but science is not an entity. It does not think or feel or have an agenda. Science is a field of study used to gather evidence, observe, and discover laws. Whatever results come from that are up to the individual to interpret.
As far as what you said about global warming: if you're right and they found out it's a myth (which I don't think you're correct about but I haven't read up on it lately), do you know who would have discovered the science was wrong? Scientists.