I've read Behe's book.
a God who would create such nastiness is not worth anyone's time, let alone worship.
And yet this is the natural world we live in. If fundamentalists actually took the time to study ecology, biology, and evolution they would understand the function of diseases, predators, and other such "nastiness." There is no "sin" because everything is already "perfect." Except their concept of "perfection" involves a faulty notion of "permanence." Yet nothing in the natural world is permanent. The body dies and decays because it has to. It is supposed to become food for other organisms. Those organisms become food for yet other life forms. The cycle will continue until the environment is no longer favorable for it. By then, of course, the Earth will have become a lifeless desert.
A Designer of the system as it exists would indeed be worthy of interest if said Designer could be proved to exist and directly communicated with by anyone in some reasonable way. There is no reason to believe that this hypothetical Designer would have any system of morality or ethics, as just about anything conceivable and many things inconceivable occur every moment of existence on this planet. This hypothetical Designer doesn't appear to have a problem with any of that. The human desire for "justice," that which would ultimately correct all the perceived "nastiness" in the world, is based on an unfounded notion that the Universe owes sentient lifeforms something. There is no evidence for this. There will be no Day of Judgment. Wishing for it will not make it so.
So, it would seem to me that the fundamentalists have unrealistic expectations for a "good" god based on faulty premises. Their faulty premises color their view of the natural world, which they ultimately refuse to accept as it is.
Dave