The pill isn't 100% effective though. So even then, pregnancy could still manifest itself. It could easily be argued that you, the man, should have worn a condom in addition to her taking the pill.
You could argue that yes, but the point that they should be able to demand one if they unable to afford it still stands. The father could be crippled financially until the child turns 18, while the woman can just have smooth sailing in life with his child support money and benefits from the government depending on what country you're in. Men should be able to order an abortion when it is impossible for them to live comfortably otherwise.