Everyone struggles with family devotions. Why?
We talk about a couple of the issues:
1st - we have this false belief that information = transformation. With all the info available in our society, people should becoming smarter and smarter. But this just isn't the case. Gaining lots of information does not guarantee transformation. Talking and learning lots of Bible facts doesn't mean your life has changed for the better.
2nd - For the past decades, churches have relied on lots of programs (from Sunday School, to VBS, etc.). Run people through all the programs and hope that they are good Christians on the other side of it all.
Parents are responsible for their kids spiritual growth. So we talk about how we keep our family devotions very simple, and the 4 very simple questions we use.