I was born when my mother was 23. In her eyes I ruined her career which was based on her artistic skill, beauty and perfection and her life because it meant she had to marry a man she didn't love.
I met my husband when I was 30(ish). All I ever wanted were children but I fought shy of settling down for a very long time because of my difficult upbringing and parents' multiple failed marriages.
Eventually when I was ready, I feel in love and we wanted a huge family: We eventually managed two healthy, live children.
DS1: 34.5
DS2: 37 (died due to congenital problems shortly after he was born at 27 weeks - we chose not to abort after the 20 week scan in case there was a tiny chance he would survive and because we believed it to be immoral).
DD: 38
Before and between I also had two late miscarriages and numerous very early ones.
I don't know if it was my age, I don't know if it would have happened when I was younger or with a different man. I do know I wasn't emotionally ready in my early to mid 20s and I hadn't found the man I wanted to marry and be with forever then.
Also, I don't regret it, and if it had happened any other way I would not have the two adorable teenagers with whom I am now blessed.
As far as work goes OP, I was very successful in my 20s and early 30s; I had 8 years off and could afford to and then started again in my early 40s and after five years in a different career was successful again. Not earning mega bucks but have a professional job and a very comfortable salary - not because society made allowances for me but because of the choices I made and my determination and hard work.
Women should be free and independent enough and secure enough to have babies when they want them and when it is right for them and this is something that should never be dictated.