We have absolutely no control or effect on whether or not GOD exists
True
and so the best course is to just live your life to the best of your ability.
The logic doesn't follow from the premise
IMHO the whole discussion of whether or not GOD exists is a complete waste of time.
Fair enough
It's equally futile to worry about some individuals personal version of God.
Worry is probably futile but if it is possible that a person can have an inside knowledge about God which exceeds you own then it might be wise to check it out. How one does this is another question
If GOD does exist, then this is the world She has given us to live in.
Not necessarily especially if the Fall occurred and it was a function of mans action
If GOD does not exist, then this is the world we live in.
True
P.S. if I was going hunting it would your party I'd want to be in