I agree with Rory, I cant see why people are so strong in voicing their disapproval. There are many mums out there that dont want the children they have, many couples who dont parent the children they have.

If you honestly want a child because you want to be a mother (not simply because you need someone) and have carefully considered all the consqeunce of your decision and you are still happy and determined to do it - then I dont see it as a problem.

Good Luck.