OK...here’s one of your prayers to a non-deity...There is a prayer to God but there is also a prayer to St. Christopher...
And no one is asking him to relay a prayer to God...
http://www.catholicsupply.com/existing/prmotorist.html
You can either accept the explanations the Catholics give to you for their own behavior and understanding of the meaning (sometimes implicit) of their texts. Or you can set yourself up as ultimate judge of the internal disposition of others and arbiter of what their prayers mean.
Your choice.