@Jasper10,
The proof is in the definition of what God does. Don't you see that?
You're living in a created world, typically requiring a creator. I'm not sure it matters whether it's real or not. In fact, I usually contend that it's not real, because people (including myself) tend to take things far too seriously.
In fact, no matter what things look like, if there is someone to experience things, we're talking about the created world. Atheists and agnostics use trickety trick explanations, but there is not one but about five elephants in the room.
1. We live in a created world. That demands a creator.
2. Supposing you are going to say God didn't do it. You have some other explanation: space aliens, abiogenesis, a council of five/twenty/3 million deities, humans themselves. Each explanation fails, if it is a created thing. A created thing cannot create all things because something has to create it, and so on until you get to an uncreated creator.
3. But suppose you say that through some loop of time, a created thing created itself. Fine, you have just made bacteria or atoms or primordial ooze your God. Or luck, usually, as these types ultimately believe in random chance. Big money, big money!
4. We can also talk scientific laws like cause and effect or the conservation of matter. "Matter cannot be created or destroyed." Given this, we have a universe that depends on pretty tight rules, usually involving reorganizing matter. All of these demand significant level of complexity. But that's not even our argument. If all matter and energy is reorganized from the same stuff, then all matter and energy is God, everything in the physical or spiritual world, good or not, real or not. God is real and easily be seen, even by someone under a delusion.
5. If somehow you had some explanation (yeah right) that didn't involve God, you would have to explain life. You see, life isn't a physical thing. Supposing someone was just struck dead. There was nothing wrong with their organ, you just stop breathing one day. A corpse is atomically, chemically, and basically every other aspect similar to a living body. But it's like a computer that is not plugged in (we're not talking about a desktop with a battery but an old laptop). There's no energy there. The thing about life? In a laptop that is fully capable of just sitting there, but dead things putrefy rather quickly. You're alive for years with only minor issues. But it takes about 8-10 days for your body to massively break down. Life then, is an energy that preserves existence of living things. Remember that you are dust, and to dust you shall return.
After that, they usually call me stupid (when they're the ones that can't come up with a logical retort)