Why do some christians when praying for a sick person, say God must have needed them when they die?

It's really not making a fair impression God, it makes him out to be a selfish git with no concern for the family or friends who might have needed that impression. Really, I'm quite convinced christians say the most awful things about their God without realizing it.
Update: Sorry first sentence is a typo.
Update 2: @ John Savage, I trust this is probably not a common practice, although the catholic church did have a system where the family of a deceased had to pay a certain amount for them to get into heaven I don't know if that is still practiced today.
Update 3: @ Problem, in front of the persons kin? No, definately not. Unless I wanted to get my behind kicked.
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