So can the MAN.
Why throw all the responsibility on the woman? It does take two last I checked.
Or don't you have a problem with guys sleeping around?
Because she has all the power.
She says "yes" or "no" to the sex act, by law.
She gets has the entire term of the pregnancy to decide if she wants to become a parent. He is expected to make that decision before the sex act even occurs.
She gets to unilaterally obligate him to financial support for the child, again by law, if she decides to keep the baby while he has absolutely no legal influence on that decision.