Dave,
I agree. Most recreational golfers I know are largely indifferent to the rules. They're out having fun, drinking a couple beers, trying to hit their drives 300 yards. They could give a shit about the rules. Fluffing balls in the rough, re-raking bunkers before a shot, dropping a ball "in area" of lost ball, improper water hazard drops, teeing in front of markers, too many clubs, and of course the ubiquitous gimmes all are practiced on a regular basis by a huge percentage of golfers.
I would bet that the percentage of golfers who accurately record their score in FULL accordance with ALL the Rules of Golf is less than 5%.
I think that pace of play and cost are the two items which account for the majority of decisions NOT to play golf.