Losing your ability for faith, love, hope is different from religion. It sounds like depression to me. Doesn't mean it is though. Get some help. You don't sound like you are done with religion to me. Maybe talk to a preacher and see if they make any sense to you. It sounds like you want your youngest to be religious, so you haven't lost all faith. You feel it will do him some good right? There is a church on every corner, so if one doesn't fit, try another.