First of all, I have more in common with atheists than religious people, so my intention isn't to come here and attack, I just want to hear your opinions. Maybe I'm wrong, I'd like to hear from you if I am. I'm just expressing here my perception of the movement and not actually what I consider to be facts.
My issue with atheism is that I think it establishes the lack of a God or gods as the truth. I do agree that the concept of a God is hard to believe logically, specially with all the incoherent arguments that religions have had in the past. But saying that there's no god with certainty is something I'm just not comfortable with. Science has taught us that being wrong is part of the process of progress. We're constantly learning things we didn't know about, confirming theories that seemed insane in their time. I feel like being open to the possibilities is a healthier mindset, as we barely understand reality.
In general, atheism feels too close minded, too attached to the current facts, which will probably be obsolete in a few centuries. I do agree with logical and rational thinking, but part of that is accepting how little we really know about reality, how what we considered truth in the past was wrong or more complex than we expected
I usually don't believe there is a god when the argument comes from religious people, because they have no evidence, but they could be right by chance.
If it is falsifiable or not depends on how you define it.
It could be defined in many falsifiable ways, give it a try, pretty sure you can find many.
My point about Dark Matter is that it isn't something we will likely have the means to falsify soon given the nature of the problem. It is also a pretty weak theory that contradicts many of the facts that we already know about the universe. So I could also create a very weak falsifiable argument about the existence of a creator and then call it a day.
"The creator was physically present in the origin of spacetime". In theory, if we could look back in time, we could verify this. There are plenty techniques that allow us to "look" back, we may just need to discover a better one.
"God is physical and exists in the universe"
Making something falsifiable isn't a problem.
You're saying the concept of a god used by traditional religions isn't falsifiable, which is right. But there's no reason to limit the idea of a god to those traditional definitions.