"why are we allowing the embryos to be destroyed simply because the "parents" decide they don't have any more use for them? Frankly, I find that far more disgusting. I know that this is a little off the subject of government funding, but in many ways I see it as the root of the problem."
It is indeed the source of the "problem", the fact that these extra embryos are created as part of the IVF process. I certainly haven't heard a peep about changing the laws to make IVF illegal or even to change the way it is done. No politician wants to look like he's against women who are TRYING to become mothers.
I have little problem with IVF in and of itself. It's helped make loving parents of people who otherwise could not conceive However, it can lead to some very messy details like excess embryos. One possible answer to the overabundance of embryos is to donate them to other couples who want and cannot have children. But then you have the possibility of the couple being dissatisfied with the outcome and demanding that the biological parents take the child back or some such nonsense. I can see the problems, alas, not the answers.
"No politician wants to look like he's against women who are TRYING to become mothers."
Is it worth sacrificing several possible lives to create one actual life? Killing life to create life? Should IVF be banned?