I respectfully disagree Maffu; the action of the man is purely restricted to providing the means to fertilise an egg, which I would argue is precisely mirrored by a woman providing an egg to be fertilised. Effectively, his action and involvement at a purely physical level end at that point. It requires considerably greater action and involvement on the part of the woman for some 9 months beyond this point (even assuming the fertilised ovum implants correctly), which action and involvement carry physical risk, discomfort and a chance (albeit relatively small) of actually dying, in order to produce a child at the end of it. A fertilised ovum is not a child; it is merely something which has the potential to become a child. Given the obvious inequalities of involvement, I would argue that in any disagreement, the choice of the woman is paramount. In other words, yes, it should be solely her choice.