You say atheistic scientists assume a scenario and build evidence from it. When it comes to explaining the origins of existence, you're more or less right(I say more or less because they're more like educated guesses than assumptions, but still). However, in order for your "evidence" to make sense, you have to assume your god exists. So, in other words, you do the exact same thing.
Thanks for the admission!
I admit we both start from presuppositions in building our worldviews (atheists and Christians) but to claim, as some do, that it is not based on evidence to just plain false. And as I have said all along, the Christian faith is a reasonable faith. It is based on reason and evidence although many do just take a leap. Some science uses deductive reasoning and some uses inductive reasoning. It is the same with us.
Take away the wishy-washy scenarios and basically, two remain, God or chance. I ask, which is more reasonable? Would you rather build on something reasonable or something irrational and illogical, since it is reasonable to believe you are here due to one of these two scenarios, and one is from a reasoning Being?
If your god does exists, then your evidence makes perfect sense.
Again, thanks for the admission.
However, if your god doesn't exist, your evidence is the stuff of psycho babble.
The resurrection is another area beside prophecy that has multiple written eyewitness accounts as evidence that are most reasonable.
This is why you're not supposed to make assumptions. Evidence based on assumptions equates to nothing more than speculation and imagination. I know you'll never admit that, even though it's true. That's fine. You Christians cling to your delusions like a life line. No amount of proving your arguments false will change your mind. One needs to be interested in finding truth to be willing to change their beliefs. I've literally never met a theist of any kind willing to do that.
On the contrary, many reluctantly came to faith after investigating the evidence thoroughly, such as C.S. Lewis. Lee Strobel was another one. They were not delusional. They knew what they were doing.
What you keep seeming to forget is that humanity is here for one of a very few reasons (creation or chance), and only one is from reasoning Being.
Whether you want to brush this under the carpet or not is your choice, but it is not insignificant if you are wrong.