What's the lamest defence of Theism you've ever heard?

[Fidel_Castronaut]

Only if you think argument from analogy and complexity are compelling.

Problem is, complexity is not a sign of design.

It's not just complex, though. There are so many purposeful interactions that need to take place in order for the cell to regulate itself. These interactions are dependent on intricate structures, which are dependent on sequence of characters in DNA. When you remove one enzyme, the whole system might no longer be able to function. So the problem is that in order for it to work well enough to evolve (reproduce), you need tens of thousands of nucleotides in a proper sequence. It couldn't get there gradually, at least not by mutation and natural selection.

argument from incredulity.

You are dismissing something based on your own inability to either believe or at least entertain the evidence as currently provided. Unfortunately this is not sufficient to form a counter hypothesis. You require some study or body of literature that explains an alternative proposal which has the verifiable and testable data behind it allowing it to be reproduced. If you could provide some that'd be swell, please.