The decision on whether or not you should have kids all rest in your hands. If you do not want to, then don't. No one should feel obliged of having to do something against their will. However, this raises concern when you and your partner have different opinion on this. Hence, you might want to reconsider things or end up with a compromise.
On the other hand, this reminds me most of our discussion pertaining to overpopulation. Back then, there are only a few women who do not want to bear kids, as culture, religion, among others make them feel that they are obliged to. Nowadays, women aren't just housewives. And now that they are given better position on the society, they tend to realize that they are free to make the choice of having kids or not, and that they should not be dictated by such factors.
If you are not entirely sure of your decision, maybe you may consider delaying it, or still, may be not. Point is, no matter what, it is still your call to decide.