I know that feeling, and I remember playing through part of the first level of the incredible Waterdeep without counting a single square. Those were the days of the second edition. Now, drawing on our board and using miniatures has become something that even makes us bet on what might be hiding behind that 2x2 column. Have you tried Dungeon World? It has an incredible dungeon creator that rolls a d12.
RE: Brain Drain Sunday: The Power of a Good Map (And When Not to Use One)