so you like boring guests
If it was a guest I didn't like or a topic I wasn't interested in, I would listen to the opening of the show then go to bed.
As far as open lines, if I wanted to hear from people who were boring, dull, or had a touch of mental illness, I'd go sit in a coffeeshop, or find a line to stand in.
How many times in, say, an hour do you want to hear people be told to turn their radio down, yes I can hear you, yes this is Art/George, how are you, thanks for taking my call, and what is your question caller? Only to then hear something stupid or incoherent?