at the end of the day, I am pro-life, that will not change
Oh, Sid, you make me wonder. Munchingfoo's been perfectly reasonable; he's not trying to 'prove his own intelligence', he's just pointing out that there are serious holes in your argument - which you yourself haven't noticed.
For instance: either you think that embryos are the kind of thing that can be murdered, or you don't. But if their moral status is on a par with newborn children, or adults, you get impaled on one or other horn of the 'burning fertility clinic' dilemma.
If you think that they are merely
potential lives, then you've got a problem: at what point does the potential life come into being, and why think that it has moral status? Each hypothetical sperm & egg combination is a potential life, but you don't seem to want to invest such combinations with moral status. Aren't you even slightly bothered by the thought that your position might be less straightforward than you make out?