In general, I do not see any reason to go below 60 feet. Not much life there. Yes, there are wrecks in the deeper water, but with so little bottom time, why bother?
I feel the same way. I was in Belize in August, and I knew a few people who went out to the Blue Hole. From what I understand about the dive, you go straight down, spend 8 minutes around 120-130, and spend the rest of the time coming back up. After I heard that, I figured it was a waste of a day and my time in Belize to just hit the rec limit, and come back up. I guess I don't have the deep-diving urge?
The deepest I have been is ~80 feet, and it felt just like 40 feet except I was using air twice as fast. I'll trade bottom time and pretty colors for a number on my depth gauge any day!