That's the wrong question.
But there is the issue that men can be found liable for
something they had no choice in, ie, abortion vs birth.
They did have access to contraception so they do have a large measure of control over their potential status as a father. Yes, it doesn't always work, but you can't force a women to go through a procedure like an abortion. That would be a breach of her body autonomy. She alone is pregnant and thus have access to an extra measure of birth control, but even then, a woman isn't sure to have access to that right. For example, while it's legal to have an abortion in Canada, in New Brunswick there is so little abortion clinics that many women simply can't have access to one without moving in another province to get that service which isn't always possible. Sometimes, **** happen. There are ways to prevent those tragic events, but denying responsibility towards a child is probably not the most humane nor the most sensical way of building a society.
Finally, aborting a fetus and abandoning a child isn't an equivalent action. One is the termination of a group of human cells without any consciousness nor capacity to suffer. Abandoning a child does harm it and can and does cause suffering. The stakes are thus very different making the "male abortion" very different both in nature and consequences for society and its members.
Childbirth & rearing =/= Financial support
No indeed, rearing up child is financial support + emotional support + education + protection. Financially supporting a child is definitely a part of parenting. Being beholden to financially support a child that you made is shared by both men and women. Single fathers can and do receive child support money that women are forced to pay.