1. No reputable legal or media source disputes that PP is harvesting aborted fetal body parts and selling them. The only controversy is whether they're selling them illegally for profit, or simply recouping their costs. Numerous undercover videos have surfaced over the years showing individual doctors and technicians haggling over prices, etc., in private, at trade shows, and even in public meetings. These videos and testimony based on them have appeared in courtrooms.
2. The vast majority of unwanted pregnancies are easily preventable. Regardless, the majority of abortions for unwanted pregnancies aren't medically necessary. Perhaps "convenience" is too strong a word, but it's certainly fair to say most abortions are the sacrifice of a human life to rid a couple of a burden they brought upon themselves by willful and reckless behaviour.
3. Abortion is murder, morally if not legally. Murder can be neither responsible nor irresponsible. A couple putting themselves in a position where they face heavy life consequences
unless they commit murder is both immoral and irresponsible.
4. Innocent babies are dismembered (i.e. torn apart) in the womb in some circumstances. Some dismemberments occur after the nervous system has developed, meaning the baby (or foetus, if you prefer) has the capacity to feel pain. The child in the womb can't scream, but I've never seen the "screaming" portion of this argument feature in a debate or anti-abortion literature. If you claim otherwise, perhaps provide a few examples.
5. Again, I've never seen this argument feature in either a debate or pro-life literature. I'm not sure how it's relevant. Murder is murder, whether by chemicals, suction, dismemberment, or any other means.
6. The conservative outrage I've seen most often voiced in this regard was the condemnation of 44 Senate Democrats who voted against 2019's
S.130 - Born-Alive Abortion Survivors Protection Act, which required that "any health care practitioner present" at the time of a birth "exercise the same degree of professional skill, care, and diligence to preserve the life and health of the child as a reasonably diligent and conscientious health care practitioner would render to any other child born alive at the same gestational age." House Democrats similarly voted overwhelmingly against the bill.
Other abortionists and lobbyists have
testified to congress that babies born alive during botched abortions have no inherent right to life.
In each case, it's got to be one of the two. Abortion claims a human life. The couple (woman, if it was a unilateral decision) who ended this life either regrets ending it after the fact or didn't/doesn't care about it.
As for what percentages fit into which categories,
this article cites numerous studies (the gist is that 20-28% of women experience regret, trauma, or both).