But if your parents/ILs aren't participating...do you really want your kids to be left alone with them? I don't think I would want someone looking after my kids, if they really didn't want to partake. I think my kids would be better off without them, but that's just my take.
Agreed. They have no childcare obligations whatsover to you. They have an opportunity and it sounds like they do see their grandchild. Very different than being obligated to relieve you of the role you've chosen.