--comes from the feeling many of us have of being "jilted" by Braintalk's founder, and curiosity at what possibly could be more interesting or compelling to him than the Braintalk boards.
That being said, yes, SL, as a virtual world is just like the real world--good points, bad points, wonder, mischief, fantasy, absurdity, kinkiness, truthful and not-so-truthful self-presentations--though one can change the latter much more quickly, and with much better graphics.