Few non-sequiters and violations of several logical and argumentative fallacies.
It does no follow that human beings really need God. If that was true, then atheism wouldn't exist, as it would be physically impossible to live without God. Hence, human beings do NOT really need God.
It does not follow that necessity precludes and inevitably confirms something's existence. The old saying "Necessity is the mother of invention" comes to mind.
False premises may lead to a true conclusion - that would make it valid - but since your premises are patently and demonstrably false, your argument is not sound, and is therefore not logically permissible.
And a quick little reductio ad absurdum:
Humans really need common sense.
What humans need, probably really exists.
Hence, common sense exists.