I’m not sure what the question is.
If one takes as a given that abortion is something to be avoided if at all possible - without taking any extreme positions like disregarding the health, the age, or the willingness of the woman to carry a fetus to term - then that’s the obvious, logical conclusion: the only 100% way to avoid a pregnancy is to avoid having sex.
To me, that doesn’t mean “don’t have sex, full stop”, it means “don’t have sex without birth control, but be aware that birth control methods are never 100%, so don’t act like if you get pregnant that it was an unforeseeable circumstance beyond your control.”
Which is exactly how my GF and I behaved for years before marrying and setting about having children intentionally. We discussed it before ever engaging in the intimate tango, and agreed that neither of us would want to abort a pregnancy, should one occur. She was very clear that she would not do so, which I appreciated, and was on board with.
We had sex with birth control for many years without incident. I don’t know if that is “lucky” or simply “not unlucky”, but that’s neither here nor there.
To me, having an abortion should be a measure of last resort, in extremis; I find it distasteful, to put it mildly, as a routine form of backup birth control. But I leave that up to the woman’s choice. What it should not be is an unthinking choice.
I am amazingly glad my GF-now-wife had the forethought to put that issue on the table at Stage Zero. “If we have sex and I get pregnant, I am carrying the baby to term. Are you prepared for that?” Is something every man should consider as a possibility, and then to be honest with himself and with the woman about the answer, and then to act accordingly: “Yes, and I’d support the child”, “Yes, but you’d be on your own”, “No, I can’t be in that position”.
As would be the opposite, for the woman: “if I get pregnant by you…”, would she say “…I would not keep the child (but would give it up for adoption, perhaps to me)”, or “…I would abort it?” And would either statement be OK with me, as the man? After all, equally important as part of a “woman’s right to choose” is indeed “to choose life”, despite that phrase’s use as an anti-abortion-rights slogan.
That’s one of the things I bring up to “anti-choice activists” from time to time. I support a woman’s right to choose, exactly because I know three women who were almost, or in fact, not given the choice… NOT to have an abortion. And one of the things Planned Parenthood does, in addition to giving medical and psychological advice about and administering the procedure of having an abortion, is to get the woman alone in a room for a long period of time, to make sure it IS her choice.