My point in posting this is simply to ask you—what, in your opinion, are the most legitimate criticisms of your own way of thinking? If you say there aren't any, I won't believe you.

How legitimate does "most legitimate" have to be? If I thought there were any criticisms sufficiently legitimate to seriously reconsider my viewpoints, I would have changed them already. To the extent that my religious beliefs are different than they were, say, fifteen years ago, it's because I spent a long time seeking out arguments, and if I found any persuasive, I modified my beliefs accordingly. But I reached a point where I stopped finding novel arguments for theism long before I stopped looking, so if there are any arguments for theism that I would find compelling, they see extremely little circulation.

The arguments for "theism" which I see the least reason to reject are ones which don't account for anything resembling what we conventionally recognize as theism, let alone religion, so I'm not sure those would count according to the criteria you have in mind.