Minor damage to wall; Two installation methods are available, seamless nail(Minor damage to the wall, no need to make holes) and drilling
Away from the room looks tacky; This wall mount don't need long pole and extension cord, keep room pretty
Usually lower installation costs; No need for specialized tools, Running through walls or ladders
Save Room Space; you may save critical floor and table space by safely mounting your projector to the wall; Wall mounts are excellent for utilizing otherwise wasted wall space