But these embryos will no longer work. They are simply unusable and the only option is to dispose of them and replace them with new, viable embryos.
And, more importantly, you make the assumption I equate embryos with live humans as well. I don't. Embryos are NOT humans. They are, at most, could be humans. Proto-humans. Would be if they were viable. But the embryos we're discussing are not, and no blastocytes or undeveloped embryos are period. They're capable of being stored away, they have no nervous system, none of that which would make them a living, breathing creature. A potential is not the real thing, and an embryo is not waiting to live nor would it screamed if it 'died' since it was never alive in the first place. So no, euthanasia is not the same as utilizing a dysfunctional no longer viable embryo. And you know what, yeah. I do believe in willing euthanasia in the case of an incurable, going to kill you in weeks disease. If you want to be euthanized at that point to spare yourself needless suffering, then that should be your right.