Granted, but at the cost of eternal youth you are forced to endure the pain and suffering of your dearest friends and family withering away into old age and eventually dying.  The realization that you will live forever while those you cherish must succumb to the persistence of time slowly drives you insane until you recede into the dark recesses of a cave and become a filthy hermit babbling incoherences and scrawling morbid messages about the frailty of life on the walls in your own blood and feces.

...oh and you don't get to draw social security either.

I wish I could be the most boring and uninteresting person in the world.  Ya know, just to see what it feels like.