I don't know if I want to have children but my mother in law keeps asking me for them.
Have you told her that you are still undecided?
Yeah, but no matter what I say she keeps talking about it.
I understand why you feel that way. As excited as she may be, she shouldn't be pressuring you for grandchildren. It isn't appropriate for her to keep asking you about it after you've told her how you feel.
She might be right though, we are getting older.
I'm glad you are able to see both sides of the situation. Ultimately what you do is up to you. You shouldn't let what she wants sway your decision.