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The question wasn't "why do you feel this way" the question was "why do most people feel this way." Your arguments, for what it's worth, still boil down to "our knowledge is imperfect, therefore we'd best not tamper" which, while valid, are always true - we will never have perfect knowledge, therefore you are likely to always be against human cloning.
In your own way, "there's stuff we don't know" is morally and logically equivalent to "we can't play God" albeit more diffuse in scale. That "near-universal opposition to human cloning" is shared by you - and while there are clearly many positions between "God says it's bad" and "shortened telomeres are detrimental and cruel to their inheritor" they come from the same basic place: "don't mess with what we don't understand."
Note that I haven't put any of my own position into this. Note that I don't intend to. I'm simply illustrating that any drive against controversy often comes from the same animalistic place.