In cloning, in contrast, reproduction is asexual - the cloned child is the product not of two but of one.
The abortion controversy is important for what it says about our stance toward procreation and children altogether.
It's a short step from the belief that every child should be wanted to the belief that a child exists to satisfy our wants.
Cloning looks like a degrading of parenthood and a perversion of the right relation between parents and children.
Our only responsibility is to live our own life and take care of our own children.
Perhaps you could sympathize with those who seek to replace a dead child with a copy, or to copy a parent or a relative or even a celebrity.