Here are some notes I made some time ago, based on various sources, some of which are linked below. Richard Carrier's book "Sense and Goodness Without God: A Defense of Metaphysical Naturalism" provided an excellent backbone to the first set of points.
The methodological and other problems:
• The biggest and most fatal criticism is that it is a tautology. The universe has to be ‘fine-tuned’ for life. Life developed within the universe, and so life has to be evolved TO the universe. Life cannot develop dancing to the tune of another universe – this is nonsensical. Therefore, any life that starts in any universe, by definition, must be ‘fine-tuned’ by that universe and thus every life-permitting universe will appear to be fine-tuned for life.
• Black holes: our universe is full of them - trillions and trillions of them. It seems like the very purpose of the universe is to produce black holes (not life). There are more black holes than life bearing planets (a lot more). A lot more material in the universe is devoted to creating black holes (a lot more). The universe is almost entirely a vacuum, in which black holes, not life, thrive. We barely struggle along, having a very difficult time surviving, in brutal competition for resources on a microscopic island of life that will be melted by the sun in some time. If we're not wiped out by meteors or interstellar radiation before then. Life has a hard time starting and is very easy to get rid of. Black holes, on the other hand, are inevitable consequences of this universe. And then it's almost impossible to get rid of them. Black holes are right at home in this universe. 'God did it' in no way explains this, especially in context of everything else the god hypothesis claims. God could have made:
The methodological and other problems:
• The biggest and most fatal criticism is that it is a tautology. The universe has to be ‘fine-tuned’ for life. Life developed within the universe, and so life has to be evolved TO the universe. Life cannot develop dancing to the tune of another universe – this is nonsensical. Therefore, any life that starts in any universe, by definition, must be ‘fine-tuned’ by that universe and thus every life-permitting universe will appear to be fine-tuned for life.
• Black holes: our universe is full of them - trillions and trillions of them. It seems like the very purpose of the universe is to produce black holes (not life). There are more black holes than life bearing planets (a lot more). A lot more material in the universe is devoted to creating black holes (a lot more). The universe is almost entirely a vacuum, in which black holes, not life, thrive. We barely struggle along, having a very difficult time surviving, in brutal competition for resources on a microscopic island of life that will be melted by the sun in some time. If we're not wiped out by meteors or interstellar radiation before then. Life has a hard time starting and is very easy to get rid of. Black holes, on the other hand, are inevitable consequences of this universe. And then it's almost impossible to get rid of them. Black holes are right at home in this universe. 'God did it' in no way explains this, especially in context of everything else the god hypothesis claims. God could have made: