Pretty simple. Do you like songs that are Live? Most recorded songs aren't there real voices; their fake. Not all recording are fake however, just most are digitally remastered (I think thats what they call it).
Some songs are way better live, such as: Hotel California (Eagles) Rock You Like a Hurricane (Scorpions) Wind of Change (Scorpions) Numb/Encore (Linkin Park ft. Jay-Z) Almost every Michael Jackson song. Smoke on the Water (Deep Purple)
But there are some versions of songs that are better on CDs.