The reason why default 50/50 shared custody is achievable and men can safely have children: Women don't like being moms.

If you're married with children then do exactly half the parenting. Make a record of the time you spend. When you're finally fed up being kicked around, file for 50/50 custody. Then show them this article.

https://arahthequill.medium.com/motherhood-was-designed-by-men-cf89e7df250e