I'm gonna preface this with the fact that I do not believe in a god or gods of any sort. But your disagreement with his opinion is sorta silly.
Look, Evolution is fact. The Theory of Evolution is still open to debate, how it works, what impacts it, etc.
His opinion on it seems to be that a creator could design something like a self-serving system to improve over time. Your argument is "Thats not efficent". Who says it needs to be? If God really did exist, who says he cares how much time it takes? Who says they/it would even expierence 'time'?
In the tend, religion and things like 'intelegant design' are little more that faith based beliefs trying to take what science has shown to be true and make sense within their own religious construct. There's nothing wrong with this, even if it's not right. You're doing it right now through your senses. You're not seeing white background and black text, you're interpreting what your eyes are sensing as those colors and shapes.
When you get down to it all you're seeing are waves of photons and a weird mish-mash of quarks and glueons. Trying to talk to someone about why their belief is wrong is like trying to explain to someone why a red apple isn't red. It wont change their world view, so stop trying. Just accept that some people see the apple as Red, while other people dont. Trying to argue against their point only lets them decide how the argument is played out, in their own terms and on their own grounds. If you dont believe, great. If you do, great.
In the end, we're all wrong anyway, that much im certin of.