Abortion's Double-standard
Many countries allows abortion. Some advocate that women are not free when they can’t make decisions about what they do with their bodies. They are not free when they can’t make decisions about what they do with their future.
But given this fact, it also begs the question - if women can opt out of motherhood through abortion, why can't men opt out from fatherhood?
If a man got a woman pregnant, why he is obligated by law to support that child regardless of the circumstances?
This double standard causes resentment in most men, who for example did a one-night stand with women, with which they mutually don't intend to build a family.
But somehow, he is suddenly obligated to support depending on the woman's decision to keep or not to keep the child. In this scenario, men are not free to decide about their future - it is decided by the women.
Remedies
Unfortunately, this double standard is not addressed yet. But for men - the best way to keep you from ending up in this situation is not to have sex with people other than your wife. Take control of your lust.