The"bad design"argument against ID

Ironically, proponents of Intelligent Design try to stick to scientific arguments whereas the critics of ID often resort to arguments of a religious or theological nature. One of the favorite such arguments of ID critics is that a good, benevolent, unerring, and all-powerful "intelligent designer" would not have made the bad designs that we often see in nature. The appendix is often cited as an example. However, I think that the overall design is so bad that it might be better to just start over with a clean slate. Let's start with immortality. I have thought that immortality would be as terrifying as death -- we would keep doing the same things over and over again until the boredom became inbearable --- so maybe a lifespan of, say,10,000 years would be better But then I thought that there are some things that I never tire of doing, and there are so many things to do in the world that by the time I finished doing all of them and had to start over doing old things again, those old things will be so far in the past that I will have forgotten them and they will seem like new things again, so I will never get bored. So I have concluded that good design would include immortality.