When Moses wrote "Bind the word of God on your head" he did not mean to write a piece of scripture on paper and put it in a box! (dumbed down people too).
When God said bind the word of God on your hands he did not mean to wrap leather straps around your arms in put a piece of scripture in a box.
Same with a Mesuzah. Bind the word of God on your home by being thoughtful and generous. NOT by putting a box with a scripture on the door.
You people simply are in a world of your own making - not anything to do with the words of Moses.