When you realize that 64% of all abortions are coerced abortions, abortions where the boyfriend, husband, or woman's parents pressure her into the abortion, IeD say that men have a major input into the matter. I've not heard of any of them being because a condom broke, but I won't rule that out. In that situation, though, I think the majority of men would man up and take responsibility. That is personal opinion based on my own attitude should it occur.
As for husband/boyfriend coercion, they are finding nen that do so are often aggressors in domestic abuse.