Evolution vs. Creation is an extension of the No God vs. God debate.
Not really. There are plenty of religious people who accept evolution as the only sensible explanation we have for how humanity came to be. What it's an extension of is the biblical literalism vs science debate or the biblical literalism vs biblical symbolism debate.
It hasn't been conclusively to most Creationists(myself included) that we are an accident. The argument, is less about how we got here, than it is about God's existence or lack thereof.
Wrong. That's exactly what any argument trying to disprove evolution is about. That's why religious people who do accept evolution join in on the same side as the atheists for that argument. It's only if the discussion moves on into the separate argument about God's existence that they swap sides.
I can't speak as to why Evolutionist are so intent on disproving the existence of God.
Firstly, there is no such thing as an Evolutionist. Fundamentalist christians like to make up that word so that they can label everyone who disagrees with them. Usually they then start pulling in arguments about the big bang (which have nothing to do with evolution) soon after. It simply proves that they don't know the subject that they are arguing about.
Secondly, people who accept evolution aren't necessarily intent on disproving the existence of God. While many people who accept evolution are atheists, many are agnostics and many are religious. Even many atheists aren't interested in disproving the existence of God. As I've said in the past I've got no problem with someone claiming God exists at the philosophical level. My problem is when they try to attribute real world things that already have an explanation to God.
Attempted to claim that they are all trying to disprove the existence of God is naive at best and deliberately fallacious at worst.
For myself, simply from the point of view of the existence of Life, things are too perfectly set up for Life to exist on this world, perhaps the entire universe for it to be an accident. Also, Creationism does not by extension imply a Young Earth. What has been conclusively proven is that the edge of the observable universe is 15 billion light years away from us. That means that the light we see has been in transit for 15 billion years, so the universe is at least that old.
You should read the Young Earth Creationists arguments against that then. It should give you a good chuckle at least.

Speaking as a Christian, I will say that perhaps the reason people seem so desperate to deny the existence of God is that it also means that one day, some time in the future, they will be called to account for they're actions and accept the consequences for them, or if you are a Christian, Christ will vouch for you and which means that your rewards will be proportional to your deeds.
Or perhaps they are sick of the bull**** that gets done in Christ's name. **** like blowing up abortion clinics, starting wars, hamstringing sex ed. programs both here and in the developing world.
As I said earlier I don't deny the existence of God. I deny that there is any proof. And without proof there is no sense in believing in God. And I'm certainly not any more worried about being judged by God than I'm worried about having Ma'at weigh my heart after death.
In the end, practically speaking, what does it matter where we came from
Practically speaking? A lot. Had Darwin's discovery been suppressed then we wouldn't have modern genetics. A great deal of medical knowledge is based upon an understanding of evolution (Virology is another good example). The techniques that are the result of an understanding of evolution have a lot of importance in the fight against diseases and in medicine. So yes, it does matter.
The people who want to suppress and devalue the understanding of evolution would hold back medical advances as a result of their stupidity. Which is why this kind of nonsense needs to be stopped.
what matters is the here and now, what we do with what we have been given. I mean if you came out tomorrow with incontravertable evidence that people evolved from chimps or something what would change? People would still have to go to work and pay they're bills, they'd still go to the park with they're kids, go fishing, play video games, ect.
Well it would mean that YECs had to finally shut the **** up. They'd be proved 100% incorrect about biblical literalism. With that gone society probably would undergo quite large changes.
I guess what I'm trying to say is that zealotry, on any subject, is a bad thing.
That's a great ideal, try actually living by it. I've seen you make several statements over the last couple of weeks, on subjects you quite obviously have no understanding of. And the only explanation I can think of is that you are motivated purely by zealotry when making them.