I think the answer to this must partly depend on if you wanted children or not in the first place?
At 35, getting pregnant would be an utter disaster for me - I'm the happiest, most fulfilled I've ever been, I have purpose and joy and a delightful life, and absolutely zero desire to bugger it up with a small sticky needy person who will steal my precious sleep and make me exhausted and permanently worried. I've been around small children in my extended family since I was 9 and I am certain I do not want a baby, a child or a teenager. And definitely not a toddler 
However, I can see from my friends who have children who were very much wanted, how much joy they bring, and I can see the sadness in my friends who struggle with infertility.
So... for me, children would not be a happy choice and I will live a fuller, happier life childfree. But for my friends who desperately wanted them I think they would have a happy enough life but there would always be something missing if they hadn't had them. And for my friends who haven't been able to have them but desperately wanted them, they have all built amazing, full, happy lives without children - but I'll never know what their innermost emotions are about the situation.
Only my thoughts of course!