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

[abaris]

Design is the only known cause that can explain the features in cells, therefore it is the best explanation so far.

No, it isn't. First, you're filling gaps again. Secondly, design is a result of natural observation. Design, as in humans designing stuff, didn't drop from the blue heavens. It's a process of observation, which led our ancestors to designing tools and other things. So nature is the model, human design is the result. You can't look at the work of humans and come to the conclusion that nature has been designed too.

Nature simply adapts to what's working best in certain environments.