Forced entrapment?   
How can a man not be held accountable for a pregnancy. 
Last I checked sperm is still required.
Are you implying men are victims and women entice men to give them sperm, against their will?
If men don't want to be fathers, they need to be accountable and responsible regarding contraception.  There is always the old fashioned way....abstinence!!
The failure from a sociological point sits equally with men.   
Isn't it time you get into the 21st century?