Good job on your juice fast, Dave. = ) I agree that it's surprising how much hunger you lose when you're juice fasting. I do a small amount of it every time I'm about to clean up my eating to jump start some progress. I usually go between craving salty, meaty foods in the beginning to just wanting to gorge on pineapples, so it's interesting how much personal tweaking there needs to be in your own personal juicing plan, between whether you need to make a salty homemade V8, or put a little more fruit into your green juices. But yeah, it's not sustainable. Not even the most prolific of raw vegans will stick to it for longer than 90 days, and it's not that you can't keep yourself fully loaded on calories and nutrition, but that the act of actually eating and consuming food is of social significance, and having food to chew on is a primal comfort.