No offense, but that's because you don't understand the potential of the unit, not because of the unit...to help you out..the most common use will be bouncing it off the ceiling or a wall. Doing this will give you natural looking light instead of hotspots and redeye.
Example: SB-600 bounced off ceiling
This one bounced off the top left corner of the room where the bride was facing
On a higher level, it can be used off camera (using CLS, depending on your camera body) and give some wonderful off camera lighting.
Example: SB-600 fired via CLS through a 33" shoot through umbrella
Often times when shooting outdoors, to expose the subjects properly, you get a blown out background and ugly landscape scene behind your subject. Using a flash, lets you adjust your settings to the background, then light your subject via SB-600
Example: SB-600 via CLS through a 33" shoot through umbrella. Scene exposed for the background, TTL light on the subject.
A lot of my shots could have used a second SB-600 and if I did any serious wedding or portraiture work, I would have a second 600....but a single 600 can get the job done. Of the above photos, the once with bounce flash would have had grain from using high iso or harsh shadows from using the popup. The shot with the sunset bride....just flat out wouldn't have been possible. The shot with the bride and groom would have had less pleasing skin tones and harsher shadows with a sky that was blown out white. SB-600 saved the day on all of those shots.