Not a valid argument.What are the chances that you will find a functioning robot on a planet in space that has assembled itself from natural chemical and mechanical processes?
If you accept that there is no chance of that happening, then the probability that a living being (which is much more complex than any robot) would appear in that same way is much lower.
The mechanisms that produce the remarkable complexity of biological processes are known, natural, observable and explainable. Yes, the complexity is amazing, but not understanding the biochemical mechanisms or accounting for the time involved does not make it magical. It makes I.D an argument from personal incredulity.