No that's not really true.
First of all, science only explains the mechanisms for things, materialistic science that is. Even if the quantum mechanics become far more advanced, as you've put it, all we'll know is "how it works" really. It can't give us an explanation outside the limits it's defined by, the materialistic limits, like ok, but "where did all this come from?", and "what caused this to happen?", which will remain the next question for any discovery we make? (like the example I gave with the gun that shot the man)
Also time has proved that the more advances we make in science, the more it makes us realize that there is now even more for us to learn, rather than less left to learn. So the current curve in knowledge doesn't suggest that there is a time at any point in the future, where we should expect to answer all our questions. If you look closely, you'll see that even though we know more now than they knew 1000 years ago, what we also know now is that what we don't know now is far far more than what they thought they didn't know 1000 years ago.. So, the way things are going doesn't suggest that we're going to "know it all" through materialistic science only if we wait long enough.
Another crucial point in my argument is: even now, even those people who believe in science and say that they don't believe in faith, or anything unless it's supported by factual evidences, most of them actually do have faith in things they don't have factual evidences that support it. They do exercise faith as well, even though they might not realize it. I gave an example about that when I asked: Do you think that killing a 5 years old kid is right or wrong? Most here would say that it's wrong, and they are (probably) totally 100% convinced and have total belief that it's wrong. But, there are no scientific facts or evidences (like they ones frequently asked for us to believe in God) that support their belief. This proves that no matter how we try to deny it, there is an aspect in our life, or a dimension if you like, that's not materialistic. And that's why we can't rely on materialistic evidences to debate about things that fall in that dimension. However we can still use logic, and sometimes even our feelings to try to know more about it, or try to debate about it.