Doesn't bother me in the slightest.
I am slightly concerned for you, that's all.
You have abandoned science, which has interesting things to say about the cloth, and are asserting something on the basis of FAITH. Which is swell...unless God left that cloth there exactly as it appears as an aid to men's faith. Certainly he performed so many of his other miracles for that very purpose! This would hardly be out of line.
In that case, you are calling an act of God a sinful graven image. And that would be an error. Probably not a very serious one, but an error nonetheless. You are asserting with certitude that which you cannot possibly know, and if you are wrong, you are giving God a raspberry, telling him that you don't need His stinking sheet.
Anyway, we are all free to think what we want to think.
I am not hostile to science, and find that the process of uncovering the truth or fiction about the Shroud teaches me an awful lot of interesting science and Church history.