As far as I can tell, it's due to the religious nature of Operation Christmas Child and Samaritan's Purse....from previous threads I've seen that people resent the fact that the volunteers pray with the kids and include religious leaflets in the boxes.
But is this really enough reason to not send a box? I can't help but think, if my kids were in a war torn country and had nothing...no toys or anything...they'd rather hear a few prayers and get their box than NOT hear a few prayers and get nothing.
Or am I missing something?