June's Mail Call asked what readers thingk about those who are taking in unregistered horses and planning to breed them. The obvious answer is that these grade animals should not be bred, and that doing so will only add to the unwanted-horse burden.
Knowing a horse's genetic past can aid you in creating a foal with the correct conformation to ensure it a successful career and life (hopefully one outside of feedlots and slaughter houses).
In my opinion, I think a registered horse has a better chance than a grade horse at staying in a good home and out of a slaughter house. That is just my opinion.
Food for thought!