Recessed lighting can brighten up the room the recessed lighting is installed in but if you use the incandescent bulbs in the recessed lights then they're not so energy efficient and could raise your electric bill having all those lights on.
But if you install LED bulbs in the recessed lights then you'll have both a bright room and an energy efficient light source.
So if you plan to install recessed lighting to give your home a nice look as well as brighten up the room then going with LED light bulbs is the best way to go for energy efficiency.