Well then are you presenting arguments about God's plan if you don't believe in it? I'm not trying to dictate what you can say and what you can't. It just doesn't make sense for a person who doesn't believe in God to present God's plan. It's like a person who doesn't believe in the flood claiming God is evil for killing people in the flood. It doesn't make sense.
Just because someone doesn't believe in something doesn't mean they can't argue about it. If that was the case, we would almost never have arguments. I don't believe in God, or the flood myth, but I can still look at them, just like you can, and make judgements about them. I can present God's plan just as much as you can, because I have mostly the same information.
We are both human, which means that if He exists, neither one of us can possibly hope to understand Him, whether or not we believe. I, therefore, have the same information that you do, namely the scriptures. From that, and from what others, such as you, tell me, I can present what we know God's plan to be. You believe that the scriptures are God telling us about his plan to help us understand it better. I use it to do just that.
Tell me whether you disagree with this: God gave us the opportunity to live here on earth to experience things in this life that we couldn't in others. These things, like suffering, pain, joy and love, are supposed to make us better, more complete beings in the end. Once we are done here, and have learned as much as we can, we will almost all eventually go back to live with God. The way to get back to that life with God is to follow the rules He has given us, and God loves us all, and wants us to come back to Him, but doesn't want to force us to do anything we don't want to. IS that the basics of it?
From that I can judge the other things that are part of that same belief system that contradict those basic beliefs. I can even do that without knowing every little detail about the religion, because I can use logic and reason.