You are missing the big picture. How can an ant design anything if it's not designed itself? Or a beaver? Nothing that operates with that level of precision came about by accident.
The opposite of 'designed' is not 'accidental'. perhaps that is your basic mistake. The opposite of 'designed' is 'not designed'. The opposite of 'accidental' is 'intentional'.;
The ant can 'design' because it is a living thing that interacts with its environment to maximize the survival of its genes. That inevitably leads to patterns and structures because the laws of mathematics and physics show certain structures are optimal and others are not.
Not to mention that the laws of the universe are necessary for life to exist. But they aren’t sufficient to explain how life came about. The origin of life requires a massive infusion of information, which can only be explained by intelligent design.
Wrong again. What is information? think about it. It is simply the result of causality on some event. The later, caused, event is then information about the previous, causing, event. Information is made all the time all around you. There is no 'conservation of information'.
The information required for life is inherent in the 'information' that comes along with the structure and properties of the atoms that make up the molecules of life. So, for example, the hydrogen atoms that attach to the oxygen atom in water promote what are called hydrogen bonds (go figure) and those bonds are what give the nice properties of water, including the high boiling point and the fact that ice floats. The information is inherent in the structure of the water molecule.
In the same way, the information of life is in the chemistry of the molecules that make up life. And those molecules obey *exactly* the same laws of chemistry as every other atom and molecule in the universe. The information of life increases every time there is survival of one line versus another. That is the nature of information.
And then there's your own body.
"T]he entire cell can be viewed as a factory that contains an elaborate network of interlocking assembly lines, each of which is composed of a set of large protein machines.… Why do we call the large protein assemblies that underlie cell function protein machines? Precisely because, like machines invented by humans to deal efficiently with the macroscopic world, these protein assemblies contain highly coordinated moving parts."
(U.S. National Academy of Sciences Bruce Albert)
Yes, it is a good metaphor (or simile). But, there are many aspects of the 'machines' in biological systems that show them NOT to have been designed. For example, in a designed system, each part has exactly one or two roles that it specializes in. In biological systems, the same molecule can play multiple roles, even different ones in different cells. This is the result of the way evolution tweaks and plays with what is already there, as opposed to completely inventing new systems, like would happen in a designed system.
It *is* possible to distinguish design and lack thereof. And, when looked at closely, the structures and patterns of biological systems are clearly NOT designed by an intelligent designer. At best, they are cobbled together by a tinkerer that modifies what is already there: evolution does exactly that.