Well, that depends. In the English/history/philo side that is true…which is what the OP is looking for. CC’s are pretty hard up for truly flexiable adjuncts…and they can get you “in the know” if you follow the right leads. It would be better if the OP was in STEM. Even notable universities are so desperate for low-level Math teachers they are begging local public school teachers to take on a class.
You also need to consider that more and more universities are going to “adjunct pools.” They really, really like the guys and gals who don’t care to be tenure-track and only want to teach a class or two a semester because they are cheap—they don’t need an office, they don’t get benefits and they often can’t join a union because they are below 50% FTE.
Competition is pretty high, but the OP has 17 years of work experience. If he’s in any sort of business and gets pulled for an ethics class, today that would make him a top pick above someone who has a PHD but no experience in real life.
More and more colleges are pushing the “adjuncts have real-world experience” (and thus, do not want to teach full time) to get around the ethical issues of adjunct teaching.