Illogical Cloning Fears

I have yet to hear from anyone a cogent argument against Reproductive Cloning, that does not rely heavilly upon some enigmatic, intangible, undefinable and totally irrational, "Yuck Factor" or "Wisdom of Repugnance" and/or complaints that bring in some phantom deitie's rights over our own to live as we wish with free will.

Here's my guantlet being thrown down. I challenge anyone to make a good argument against reproductive cloning that does not use the "Yuck Factor" or "Wisdom of Repugnance" or any other flimsy ill defined notion and also leaves the issue of religion out of the argument.