I just recently had my first at an age closer to 40 than 30. I think freezing your eggs and having kids later is not such a great idea. Sure, you can have the kid well outside your prime or even use a surrogate. But that is just the beginning. Your child is not going to get the experience of being raised by a more youthful and energetic version of yourself . I think there is a lot to be said for that. I wish I had started 5 years sooner.