People live in different ways, different lifestyles, have different goals and aims in life. Somebody may want to start a family immediately after getting married. Maybe because their biological clock is ticking fast and they’re pressed for time.
You, on the other hand, might be planning on waiting for four or five years. So this question is very critical. There might be an age gap between you and your potential partner. Perhaps they had a previous family and they are adults now. It is important to enquire if they are willing to go through the whole experience again.
Can they take the early mornings and the sleepless nights again? Some may not want to take a break from their careers since a newborn may hinder their progress.
So discuss this before wasting each other’s time in something that’s fruitless.