1. Life and its complexity can be evaluated, and it can be concluded to have been designed, regardless of man's inability to "demonstrate that it was designed".<quoted text>
The problem with that post begins and ends here. You're asserting design. Until you can demonstrate that something was designed, you cannot rightly assert it was designed.
What would a not-designed universe look like? How do you think it would differ from our universe, and how do you reach that conclusion? Please, share the evidence that supports your suppositions. Thanks in advance for a shit-ton of absolute dick-all.
2. A non-designed universe would be nothing but chaos, and it would be certainly lifeless. I'm simply making a logical scientific deduction. Randomness does not produce order... ever.