If the subjective basis for terrorists hating America is off limits for consideration, that would seem to leave the objective basis: Is it something we did, or didn't do, to them or theirs? But this violates the ancient conservative taboo (c. 1984, styling by Jeane Kirkpatrick) against "blaming America first." So, check and mate: Terrorism is evil, evil, evil—gosh, it's evil—and there's nothing else to discuss.