When i see the Sun, i see some gigantic "fireball" that is wasting most of its energy on nothing, a tiny part of it shines on the planet. It helps, but on the other side it's also quite harmful for the humans. I learned that at some point it will destroy the planet when it "self destructs", might take a while though.
In the end however, i see a Sun, one of many, I don't see the big light that God put up in heavens for me, and if he/she/it really did it, then i don't know it.
I can only assume that your God it, or some other God, or many gods together, or.. that some huge space bird pooped and it was there, or so many other reasons for why it could be there.
All that is imagination though and has nothing to do with knowledge.
When I see a car or a house, it is something that I recognize as being built, even built by humans because I know that people build similar stuff and that stuff differs from things that I saw occur naturally.
When I look at the universe however, I see something that I don't really have much information about.
But i think i am safe to bet that you never watched people (or Gods) make other universes before, or anything like it, so you don't really have a basis to be able to say "oh this is that thing that Gods make out of nothing".
It's size and the fascinating things about it, and the huge amount of things you don't know about it might make you IMAGINE that it could have been designed by some supernatural, very powerful entity that you call God, especially if some old book says that your God did it, and you believe it already because you were raised by people who believe it and respect that book, in an environment with many people who also believe it and want you to believe it.
In that case you already presume that God is the big boss who makes everything, which is why it is really easy to think that God created the universe when you think about it.
But... did you ever consider other Gods? There are many Gods who people believe(d) in, your version is just one of many and probably one of the younger versions, people believe it since 1400-2000 years ago, unlike many other versions who people believed in many thousands of years ago and some still believe in them.
Fact however is, NONE of the people know for sure who made the universe, or if somebody made it at all. They are arguing from ignorance like Mr. Baker explained, and because their belief is pre-set by social pressure and religious indoctrination, started by people who died long time ago, who you believe were in contact with God and that he told them what he did.
And of course because the book says that they will go to heaven if they believe it and have sex with virgins or whatever.
Let me ask you something...
Would you change your opinion that Allah (or Yahweh or whoever you believe in) built it, if i told you it was actually built by some guy named Hugo, his brother Fred and their elephant army from another universe? They have a huge machine for that (pulled by the elephant army in specially designed space suits for elephants) and they are making universes as a hobby every once in a while.
I have a book where he explained how he did it. There are more informations about the universe than your old book has, the book is written in your language and explains pretty much all you know about the universe in detail, even more than you know.
Would you believe me if i really show you the book or would you still think your God did it?
Well I think I already know the answer..
Another question, did you ever imagine that there might be NO God at all?
For me it is really awesome to look at the world the way it is, without having in mind that some supreme being is looking at me and wants me to love him and be afraid of him at same time, but that he never tells me anything on his own and actually gives me no reason to believe in him, yet wants me to behave like some people wrote in some old books... and that i will burn in hell if i don't believe in him and do exactly as the book says.
There are so many books like yours, some of them have many of the same arguments and stories about God, but none of them have real proof for their existence. Some of them have similar threats though.. all in all, it makes it really difficult to choose a version if you really think about them, but for me it made it pretty easy to reject them all, especially after realizing that they are loaded with lies and incoherent nonsense.
Furthermore, i find it ridiculous when i try to imagine that such a being, so powerfull and all knowing, needs some ancient murdering ignorant sheep herders to spread the word of his existence and write down his rules. I would expect that being to be able to spread his word more effectively and explain what he wants and why he wants it without threatening me and telling me that i am only a good human if i believe what some old book says..
I live without having God in mind, I don't believe that any of the versions people believe in exist, but if some of them exist and want me to do ANYTHING, they probably know where to find me so he/she/it/they can tell me in person, or make me understand personally otherwise.
So long i will use my brain to think and not let other people and some old books think for me, and i will be my own boss, at least when it comes to what i believe and how i live.
I can only recommend trying to be your own boss and not a slave to the imaginary.