Wow, you must try real hard to live in that storybook life of yours. I have news for you, usually the lead up to death hurts in some fashion...sometimes long and drawn out, sometimes "in their sleep" which really means they had a heart attack and no one was there to help, and heart attacks hurt right before they kill you. Furthermore, life is full of pains even for healthy, happy people. We fall, we stumble, we heal, we break, we re-design ourselves, we heal, and then we die. I mean seriously if being in pain were such an f'ing big deal, then why do so many people have so many unnecessary and cosmetic surgeries???? You want to suggest that feeling pain is an issue here, but you're just plain being a sissy about reality. Wah Wah it might feel pain. Well born or not, it's likely the case.
If you were to make an algebra equation regarding the pain of aborted vs non-aborted, if anything the pain on the aborted side would be 1x or maybe even 2x, but on the non-aborted it'd be ∞x. Clearly the aborted will be feeling less overall pain in it's life.