My earlier post was tongue-in-cheek, but I think it gets to the heart of the issue here. OP says democracy is bad because "...it denies the sovereignty of the Creator and His absolute right to issue laws, and ascribes that right to human beings".
OP says if you don't answer directly to God, and apparently ONLY to God, you are sinning. I (and most of the world) don't see it that way at all. I only have a problem if the government, my boss, or any other authority is causing me to fail my duties to God. Perhaps this is a problem with Islam, that it styles itself as a complete answer to all the worlds problems.
But, it does not. It does not answer questions like where a road should be built, or whether buildings in this area should be limited to X height, with these exceptions, or what the water rates should be, or what the operating hours at the local pool should be, or a million other little things. These are the reasons we vote governments into being. Yes, we also have laws against murder, and rape, and theft (as does the Koran and the Torah). Our modern laws vary somewhat from these, but it is a tiny fraction of what governments actually do. There are no rules in the Koran for how drivers licenses are to be issued. And I, for one, don't think this is the domain of religious scholars to say - I would rather have traffic experts advise on such things, and I will vote accordingly.
I think you have a case for being against democracy when the democracy limits your ability to do what God requires of you per your faith, or forces you to do something against your faith. The cases of that are vanishingly small. The objections to democracy feel much more like a bunch of wanna-be-in-charge folks that are bitter the rest of the population won't do what they say. I further think that doing what those wanna-bes say would be putting THEM before God, a grave sin. So, I will not be assisting you in getting any country to convert from democracy to theocracy, till God comes down and reigns personally. I don't trust the self-appointed middle-men. I do not find most of the "holy" men to be all that holy.