Many agree that the simple chuck and sirloin burger at Louis' Lunch in New Haven was the original hamburger.
I prefer a burger on white bread too. Buns are just too much bread. I like them half-burnt and crispy on the outside and raw in the middle, cooked over wood or charcoal. I agree that a burger requires an onion, either raw or otherwise. In general, though, I'm afraid I view good burgers as just an excuse to eat ketchup.
A related topic, far more important than the topic of good hamburgers, is the topic of the family meal. I believe in the family as the cornerstone of life, society and culture, and the family meal as a key component. I also believe that the wife should cook it on weekdays unless she's on a business trip, and the guy on weekends, preferably on the grill. Wife is supposed to be the nurturer, after all, and the structurer of family life.
Unfortunately, often I did not practice what I preach in that regard because of work demands - or perhaps because of my difficulty in structuring my time well. Also, because we so often go out for dinner on weekends with friends.
Anyway, here's an article about the family meal.