We're talking human beings.
So? The point is that you're letting organisms that have the ability to feel pain suffer, while you cry foul in the defense of clumps of cells that are going to die anyway that do not have a brain, and, therefore, cannot feel anything that would make it want to be saved.
Kind of hard to have a future in the present day environment, isn't it?
You are using future with a different definition than what you are debating against. That is a falacy. You are, in all likelihood, going to be around five years from now. The embryo, on the other hand, will not. And there is plenty of evidence to show that people can obtain a future the way you used that word.
Hmmm, yes a "clump of cells" as long as it wasn't the "clump of cells" that turned out to be you. Strange how the "human" dividing line moves so.
Appeal to Pity falacy. You are "arguing" by trying to make him pity himself. That is no argument.