The only thing I would judge these women on - if you post in a public forum about your regrets about being a mother, do it anonymously, to avoid hurting your children. Aside from that - it's good to be honest and to get support if you need it.
Motherhood is a beautiful calling and being a good mother is a tough job. I’m glad we acknowledge that, but we should also honor women who choose not to have children. Sometimes the least selfish thing you can do is NOT to have a child when you realize that you can’t provide what the child needs.
And I agree that this is one more area where men have it way too easy. Doesn't mean I want to punish men, but wish we would stop punishing women.