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For everyone who thinks there is merit to ID sufficient to give it the rather prestigious label of "theory", please review the List of scientific societies explicitly rejecting intelligent design as well as the actual findings of Dover v. Kitzmiller:
What is more, defense experts concede that ID is not a theory as that term is defined by the NAS and admit that ID is at best “fringe science” which has achieved no acceptance in the scientific community…ID is reliant upon forces acting outside of the natural world, forces that we cannot see, replicate, control or test, which have produced changes in this world. While we take no position on whether such forces exist, they are simply not testable by scientific means and therefore cannot qualify as part of the scientific process or as a scientific theory.
And this is from the defence - that would be the very people who purport to believe ID is science.  For good measure, here is The Skeptic's Dictionary 
Intelligent design (ID) is an anti-evolution belief asserting that naturalistic explanations of some biological entities are not possible and such entities can only be explained by intelligent causes.*  Advocates of ID maintain that their belief is scientific and provides empirical proof for the existence of God or superintelligent aliens. They claim that intelligent design should be taught in the science classroom as an alternative to the science of evolution. ID is essentially a hoax, however, since evolution is consistent with a belief in an intelligent designer of the universe and with an unlimited number of other metaphysical myths.
And here is The Skeptic Encyclopedia of Pseudoscience:
Essentially, most neo-creationists (among whom there is quite a bit of variation) do not believe in a young Earth, accept micro-evolution (though recently so do some classical creationists), don't believe in the literal truth of the Bible, and don't even call themselves creationists - the preferred term for their version of things is "intelligent design"
The list article alone contains 25 scientific societies - and major ones at that.  May I also bring attention to the National Center for Science Education's 60 societies opposing creationism - of which intelligent design is merely the latest version.   (t) (c) Wikipedia's rules:simple/complex