It seems that on a regular basis posters exclaim the wonders of assigned seating and bemoan the fact that WN doesn't assign. I've recently flown a couple of transcons on the legacy carriers, and have a mid-con coming up next week. As a non-status passenger booking flights a week or two out, there are either no free seats available for advance selection or only really lousy ones.
Here's the seatmap for my flight on Monday, with only one really bad seat available without paying $40 more more for E+:
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Every flight I take on WN, I have a wide variety of seats available, and can always get an aisle, just by checking in at 24 hours before the flight. That seems a minor inconvenience to not sit 12 inches from a toilet. It baffles me that people think it's better to have a cra**y assigned seat rather than a selection of good ones.