I do think my ex-wife and I could've agreed to 50/50 parenting and gotten a judge to sign off on our agreement. But she would never have given up her legal/strategic advantage. Perhaps she was doing what she thought was best for the children. Perhaps. But I think she was more self-centered than that, she was doing what she wanted, regardless of the impact on the kids.
While my co-parenting efforts have been shunned by my ex-wife, I have never failed to ask to be included in all parenting decisions. It's in our parenting plan, the one we both signed when we agreed to our divorce documents. Even when my co-parent refuses to co-parent, I can be a great co-parent. My kids deserve it. My ex is frustrated by it. And I am at peace with it.
Today, I have everything I need. I may not be close to having everything I want. But my basics (food, shelter, safety, community) are pretty well covered. Today I can forgive my ex and focus on my kids and their well-being.
Your kids are learning about life from how you behave, not how you tell them to behave. So behave honorably. Be respectful of your former partner. And love them with all of your heart when they are with you.
Unless I want to sue her, but that's contrary to my entire premise of the positive co-parent. I'm learning to be better, more forgiving, and more loving, even of my ex-wife.