The fine tuning argument

[Zen Badger]

For the universe (multiverse?) to arrive by chance is astronomical! Its pretty much impossible .

And you know this to be so because............................?

The fine tuning argument usually goes along the lines of
"The universe must be designed because our kind of life wouldn't exist otherwise"

Null argument, if the universal constants were different all it would mean is that some other kind of life would have arisen. There is NO requirement for our kind of life to exist.