I don't, but only because I built my PC to monster source games
If you don't need to cap your FPS, don't bother.
Dude.. wha....

You just made that up....
LOL...
There is NO ADVANTAGE to Vsync On or Off in terms of Gameplay.. BECAUSE the simulation functions at the same rate regardless of the VISUAL framerate..
The actual game that you PLAY is not the exact game that you SEE...
In terms of Visual Preference ONLY, we can say that Generally, people prefer Vsync to remove tearing bar.