This is about to fall off the end of my comments list, so I'd like to sum up a bit:
I don't think we disagree on the science/unknowable bit. There may or may not be parts of reality that science will never explain. I personally doubt it, because science is very flexible, but I am sure that there are parts that science as we know it today won't explain.
We also agree that religion does not know the answers that science doesn't. At best, they pretend to, and so far each and every one of their pseudo-explanations has been found to be hogwash. With that track record, it's a pretty safe bet to assume the remaining ones are just more of the same.
So, in summary, religion is bullshit and teaching it to young children as if it were fact is indoctrination. In fact, I think child abuse would be a better term and yes, many people suffer for life from the crap they were told as children.
My argument there is that we can be motivated to war without religion. If religion were eliminated we'd stop using it as an excuse to kill people, but I'm doubtful we'd fight less. We'll just find other excuses.
I'm pretty sure there would still be war, yes.
I am also pretty sure that there would be less violence. Modern islamic terrorism, for example, is unthinkable without islam. On the christian side, both the crusades and the prosecution of Jews can not be imagined without the religious component. There is still plenty of violence in the middle ages if you substract these, so it's not like I'm claiming religion is the root of all evil. Sometimes it is the cause of evil and sometimes it is just a tool. I think seing it as only one or the other is too simplistic a view.