If a person gets pregnant deliberately without discussing it with the man prior, I think that's quite a horrific thing to do
Norwayspruce replied:
'If a man can't take equal responsibility for contraception, he can't really play at being horrified.'
There is no such thing as 'equal' responsibility though, is there? At some point one of you has to put your trust in the other to use the method you both agreed on and to use it properly/honestly. Genuine accidents will happen from time to time but there is also scope for deception.
She's on the pill and married. How many people who are in long term relationships continue to insist on condom use every time, knowing full well that the woman is also using some other long term form of contraception?
I asked this question on here once (as a direct response to this sort of comment I highlighted above.) I asked how women would feel, if their DPs thought about the view that they have no right to feel hard done by if the woman's BC failed, or was not not taken properly, and decided to take more personal responsibility.
How would they feel if their men suddenly announced that they would not have sex without a condom from now on, in the full knowledge that their wife/partner was on the pill/coil/implant or whatever.
The resounding response was one of horror, cynicism, irritation and bewilderment. The arguments put forward were that it was is was unnecessary and pointless, that women hated using condoms as much as men did, they could not fully enjoy sex or feel 'close' enough, that they would feel their DP didn't trust them to take their pill or that he was probably screwing around and may be concerned about STDs.
It was even suggested that it was a form of abuse/control because he and only he could decide whether/when she could get PG or not, and that decision should always be the prerogative of the woman. 
If you make a decision together as a couple that your joint form of contraception should be the pill or anything that the woman is responsible for using/taking, then it's still joint BC and a decision taken together, as far as I'm concerned, in jus the same way that if you may use only condoms but it doesn't mean that as a woman you are being irresponsible and taking absolutely no responsibility making sure BC is used, just that you are not the one personally using it. But as I said, there is no such thing as 'equal' responsibility.
If a man stood over his wife every day and insisted on watching her take the pill all hell would break loose on here. an element of trust is essential, even if that can sometimes be your undoing.