Interestingly enough, based on everything we know, a universe designed a life would have to look very similar to the one that we are living in. Given that this is the religion section, and people generally just want to bash religion in it, I'm not sure if a genuine discussion on the science behind universal fine tuning is possible here.
But nevertheless,
The Universe as a fluke and multiverse theories are necessary options to explain universal fine tuning - the standard model of particle physics has 28 free parameters, cosmology may be said to introduce more, string theory the grand unifier introduces even greater constraints. If the proton to electron ratio were much smaller there would be no stars, if it were much larger, there would be no ordered structures like crystals or DNA, if protons were 0.2% heavier they would decay into neutrons and thus there would be no stable atoms, the list goes on. We can pretend that actually this isn't so, but it is. One can dismiss the conclusions by deciding that actually these parameters can be simplified - but this is not based on current scientific knowledge or reasoning but instead is just post hoc justification of an already held belief.
With the Goldilocks enigma we are faced with the following choices;
1) our universe as it exists is an astronomical fluke
2) our universe is explained through multiverse models
3) goddidit
4) our universe is explained through CS (computer simulation)
5) our universe can be explained without recourse for (1)-(4) but human knowledge is insufficient to do so now.
of the choices (1) and (3) are unpalatable and (5) requires in effect an appeal to human ignorance.
of the two left (2) requires the the problem is simply shifted up a level, that the complexity of the model is vastly increased and that we accept that this may be unfalsifiable.
(4) does not require greater complexity at the level of reality, provides a possibility for a simplistic CO explanation with that reality, but again requires that we accept that this may be unfalsifiable.
Therefore with a universe looking like it was indeed designed for life, we can take our choices from one to five......Given the choices (4) would appear an appealing option - regardless of counter-intuitive resistance. That's not to say one should accept it, but simply accept that it doesn't fare so badly against the alternatives, as it provides us with a designer but not a god
with regards to cosmic fine tuning, selection effects and anthropic reasoning,
http://anthropic-principle.com/preprints/spacetime.pdf
is well worth a read...
With regards to Bostrom's computer simulation argument
http://www.simulation-argument.com/simulation.html
is also worth looking at
Okay, I've said my bit, everyone can go back to beating up Christians
