I see a lot of people arguing that a designer would not have designed us with all the flaws in our bodies which lead to bent backs, unfocused eyes, faulty memories, premature death, etc. The prevailing attitude seems to be that any designer who would choose such a design must be cruel or incompetent. If you assume that the designer thinks like most of us do then I agree, but I see no reason to go with this assumption. As a simple example, the designer could like one of today's scientists doing behavioral studies ... "hmmm, if I create thinking creatures with the following attributes and drawbacks then I wonder how their lives will turn out. What will be their hopes and dreams? What kind of a civilization will they build? Let’s find out."
Do I think such a designer is likely? Not really. Any kind of a designer who put together a universe which follows the laws of General Relativity, quantum field theory, and whatever the hell it is that unifies them probably thinks in a totally different way than your average human. To subscribe any kinds of human motivations to such a designer seems a bit arbitrary to me. But that makes it even harder to say whether the drawbacks in our mortal bodies are evidence for or against a designer . I really don’t find such arguments very convincing.