I'm not personally that interested in the content of the letters; however people who send stuff in take the time and effort to not only send things, but also to write a letter and I think it's nice that they get to hear them read out on in the videos (and I'm glad Dave seems to have as much trouble falling over words, when reading out loud, as I do). It doesn't kill me to listen to a letter being read out, it's not like it's every single video Dave puts up.