Trees are cheaper! My course operates under the philosophy that the best solution is to plant a tree instead of going to the cost of adding an appropriate bunker. Trees are easier to plant here (native trees basically grow like weeds so there is a huge supply) than building a bunker. Trees are easier (and cheaper) to maintain than raking bunkers, refilling with sand, and rebuilding bunkers. Trees are easier to remove. We can hire an expert to fell a large tree for $100, then the crew will have it cut up and removed in a day.
The result. A course choked with trees that sane people wouldn't want to play. Hey, i never said I was sane. Of course on the other extreme, i find aerial views of Shinnecock to be obscene.
Due to the eclectic bunkerless course thread, I have been looking at links courses and the bunkering or lack there of. The interesting conclusion I have come to is that links courses have the natural terrain that reduces the need for bunkers while antithetically having the most raw resources for creating bunkers.