"You don't need to go to a library to do your research. You don't need to go to the opera to listen to your favorite arias." This is true, but it doesn't mean

"You don't need to go to a library to do your research. You don't need to go to the opera to listen to your favorite arias." This is true, but it doesn't mean that i won't go to the opera/library anymore because of the internet... I'm not sure I get what point you're trying to make.