If you lose something it can bring sorrow. If you have nothing to lose there is no sorrow in the loss. To deaden or control even your emotions so that you can experience things from a distance allows the greatest control and insight.
You're pretty much right on Earl, but it's not as bleak as your words might imply. It's not like you are staring at all of the things that you COULD be doing or have, and forcing yourself to stay away. It is an intrinsic change in your very attitude that is oriented toward spiritual things. You are not suppressing desire, rather you are sublimating it into a sympathetic, self-guided attraction for that which is spiritual.
"Once in Western India I was traveling in the desert country on the coast of the Indian Ocean. For days and days I used to travel on foot through the desert, but it was to my surprise that I saw every day beautiful lakes, with trees all round them, and the shadows of the trees upside down and vibrating there. "How wonderful it looks and they call this a desert country!" I said to myself. Nearly a month I traveled, seeing these wonderful lakes and trees and plants. One day I was very thirsty and wanted to have a drink of water, so I started to go to one of these clear, beautiful lakes, and as I approached, it vanished. And with a flash it came to my brain, "This is the mirage about which I have read all my life," and with that came also the idea that throughout the whole of this month, every day, I had been seeing the mirage and did not know it. The next morning I began my march. There was again the lake, but with it came also the idea that it was the mirage and not a true lake. So is it with this universe. We are all traveling in this mirage of the world day after day, month after month, year after year, not knowing that it is a mirage. One day it will break up, but it will come back again; the body has to remain under the power of past Karma, and so the mirage will come back. This world will come back upon us so long as we are bound by Karma: men, women, animals, plants, our attachments and duties, all will come back to us, but not with the same power. Under the influence of the new knowledge the strength of Karma will be broken, its poison will be lost. It becomes transformed, for along with it there comes the idea that we know it now, that the sharp distinction between the reality and the mirage has been known. This world will not then be the same world as before."
- Swami Vivekananda
"Lay not up for yourselves the treasures upon earth, where moth and rust doth corrupt, and where thieves break through and steal:
But lay up for yourselves treasures in heaven, where neither moth nor rust doth corrupt, and where thieves can not break through nor steal:
For where your treasure is, there also will lie your heart."
- Matthew 6:19-21