No argument there. But the law has made women the "sole decider" for several decades now. And the law must be applies equally. Therefore, until that is changed, men absolutely have the legal right to be the sole decider as well in an abortion.
Really - the best solution is to outlaw abortions. Nobody has the right to commit murder simply because they weren't able to prevent a pregnancy. But short of that, then the next best thing is to require a consensus between the mother and the father. If a consensus cannot be reached, the person desiring the birth wins and takes sole custody of the child.
You can't make your own hand in this card game. The woman has (and perhaps always will) the last decision on any pregnancy.
When we were kids one of my friends got into trouble with his girlfriend. They ran away to Florida only to be caught several months later and brought back here to Cleveland. She had the baby and afterwards decided that she didn't want it, but she didn't him to have it either.
He fought tooth and nail. Went into severe debt in legal fees. Towards the end, he ended up engaged to my sister, and she even testified in court that she would take the child and raise him as her very own. To no prevail of course. He was the father and his girlfriend the mother. So the bailiff swept that baby out of his arms the last time, and he never seen it afterwards.
He and my sister got married and had two wonderful kids. But what happened to his baby always haunted him.
It bothered him so much that about three or four years ago, he got a program for parents that wanted to find their lost children, and he found that baby---now in his 30's with children of his own. Surprisingly, his son lived in the same town as he did.
Now his son, my niece and my nephew celebrate holidays and events together. He even posts their pictures on Facebook. His lifelong quest finally ended but was created by unfair laws to the father of an infant and an evil woman who (after learning of the reunion) didn't want anything to do with meeting her son. Who can blame her I guess?