You mentioned you don't intend to boondock. However, that's not the same as dry camping.
Do you want to use national parks? How about national forest campgrounds? Some Corp of Engineer or state parks don't have electric. As you're traveling these are wonderful places to stop and if you're 62+ you can get the senior pass through the public parks and get 1/2 off on camping. If you're full-timing this will help with costs. RV parks can get very expensive. These kinds of parks have big sites and much better surroundings.
Are you ever planning a trip to Alaska? A generator will surely help along the way in the awesome Canadian and Yukon Provincial parks or just a pull-off spot on a lake or stream.
Think about how you're really going to stay. I think you'll want a generator.