I've vented more than once about the "when are you going to have kids?" thing.
DH and I are both only children, so the only way our parents can be grandparents is if we have kids. The ILs started in before the ink was even dry on the ketubah.
My parents started dropping hints around the time I turned 30. We've each told our respective parents to back off, and so far they've honored that, but I think that as I approach 35 they'll start in again.
DH and I are also the only young couple without children in our congregation. It seems like
everybody is waiting for us to have a baby or three. My favorite: "I'm looking forward to attending your child's bar mitzvah." (My response: "Don't hold your breath.") But I think they're starting to give up on us. We just celebrated our 10th anniversary, and no baby, so maybe they think we have fertility issues. I don't care what they think, as long as they're not pestering me to have a baby!