@ElizaBennett - I agree that anyone who is considering something so drastic should carefully consider the possible impact on the child - think of it as a first act of parenthood.
The artificial insemination process, when it is done anonymously as it typical, makes a huge decision for the child that the child did not consent to. The *mother* may agree that she and her child have no right to know anything aout the father other than what is in his file, but the *child* never agreed. They have no say about how they're created or whether they will have any rights in this matter.
My intention isn't to slam women who do this. I'm sure most of them are fantastic mothers to good kids. It's just important to think about it from every angle. (And of course, artificial insemination and IUI, with husband's sperm or donor sperm, can be a godsend for infertile couples.)