Only if you assume the designer had infinite time, knowledge and resources. But life on Earth did not have to be created by some omnipotent god who created universe. It only requires more advanced intelligence than us. Although theoretically even we may reach this level in the future with advances in bioengineering.
> This is all beside the point that there’s no evidence of any kind for intelligent design, only supposition based on nothing more than intuition and feelings.
Depending on what you consider "evidence" the same sentence could be said for evolution. There are many arguments in favor of intelligent design like for example no viable mechanism of randomly evolving genetic code. I wouldn't say it's as open and shut case as you make it seem.