Pros:
No wind, rain, clouds, smoke/smog, annoying insects etc etc
Perfect viewing conditions, cold temps (for cameras), low gravity, long nights
Cons:
Constant bombardment by cosmic rays, micrometeoroids, freezing temps, no air, low gravity, long way from any conveniences, long days with high temps and brilliant sunlight, exposure to solar flares etc etc
Hmmmm....choices choices
