Leon kass argues that human cloning is dehumanizing because it

It is dehumanizing on the grounds that people are sexual creatures and cloning amounts to the simulated, artificial manufacture of kids as items and products.

Leon Kass contends in the article "Why we should ban the cloning of humans: the wisdom of repugnance" that we have to establish an all inclusive prohibition on cloning, as cloning is an affront to both ethical quality and human poise.