for me its not a matter of saying I waited... I had Spock when I was 28 and to me that was old to have my first. If life went to perfect plan I would have been having my 2nd at this age. (not just the LTTTC thing). Looking back I feel I wasted so much time before she was born. I wish I had use my time wiser and achieved more things before hand, because now I don't have the time to do it (she is still young and I know there will be time in the future). But I really do feel I wasted so much of my life, even though I did get a degree and a postgrad, I did have a career, I did get married and buy a house, I did go over seas, I did do a number of things on my bucket list, I still feel I could have done so much more, but only know that in retrospect.
Meeting DH late (in my perfect timelime of life meeting him when I was 25 was old), that along with his age, I feel we needed to make the most of our time together now, as later really might not be a option. but for me that meant kids too, so we had them earlier in our relationship than I probably would have otherwise.