The point is clearly that women can just get higher standards or opt for marriage.
Of course women can wait until marriage. They very often do. What about the following cases though:
1) A married woman gets pregnant by her husband but then finds out that she has a condition that puts both her and her child at a very high risk of death if she goes full term.
2) A woman get's raped and becomes pregnant but is in no position to be pregnant or support and care for a child. An example here would be a woman on active duty in the armed forces or otherwise occupied in a life where being pregnant and giving birth are not possible.
3) The child will be born horribly disfigured to the extent they will have no quality of life whatsoever and will not survive, or will require constant medical support to 'live' that is far beyond the woman's ability to pay for. For example born without a functioning major organ.
We could go on and on but perhaps you could respond to those 3.