Those are wonderful photos, Bob, of some of the nicest sand beaches in Maine. I don't get down there much though because it's 2 hours south. There's a contingent of Mainers who don't like southern Maine and prefer to say the real Maine starts above what used to be called the Volvo line, north of Falmouth. That group calls that very southern tip of Maine northern NH and now even the Portland area has been nicknamed North Boston (in part because the rentals are about the same price as Boston).
I don't get into that debate because Maine has many different areas and each has its own specialness, and there's so much interesting exploration to do in this state, including our many inhabited bridged and unbridged islands. From where I live, I can still drive 5 hours north and still be in Maine. I've lived in many parts of the state, but there are other parts I've yet to explore. I prefer the midcoast area for its beauty, cost of living, and low population density.