I do say that human life begins at conception, yes. I do say that the fertilized egg is a person, yes.
The fertilized egg is given just as much a chance to survive in the petri dish as it is in the womb. Again, as GovernmentShrinker said (and he is right), more fertilized eggs survive from IVF than in nature. So it's even more of a "life producing environment", not less. And as I said before, dead is dead; it's not a value judgement, it's not a personal decision. The only fertilzed eggs thrown away are ones that are dead: the ones that anyone with vision can see that are not undergoing cellular division. It's a black or white issue. It's not killing the babies, it's letting nature take its course with them, just as nature would if they were in the womb. (because it's a medical fact that not all fertilized eggs survive, this happens in nature; the only difference is it's not happening in the womb, it's happening in a petri dish) That's hardly a significant difference, imo. If you, or anyone else, want to disagree, fine. I'll just never understand why.
As for the "unnatural enviornment" argument, I dealt with that in my previous post. Basically, the entire science of medicine is "unnatural", so if we're to throw away something as "heretical" simply because it's "unnatural", then you can't even take an aspirin for a headache. (i.e, Christian Scientists).
The basic reason I posted this to you was to answer your two questions. I merely re-iterated what I posted before also, in a more basic form. The last word is yours though.
It's one thing when nature discards embryos, that's natures doing. It's quite another when people become the discarders.