Well Dr. Laura, by that logic we don't NEED radio either. Even today we could point to Howard Stern and condemn radio. We could condemn radio for the way people use it to shut out the world as they jog, for the way our kids slip on their walkman headphones instead of talking with their parents. Blaming the medium instead of the message doesn't contribute to the healthy debate we need to have on these subjects. The history of technological invention is strewn with naysayers and doomsdayers.
Human beings are by nature a suspicious bunch when it comes to new things, and wisely so.
Folks didn't like the idea of printing the Bible in English either. Every tool can be misused but that doesn't mean we should stop trying to use them for good purposes. Her own radio program is littered with commericals. Her books are selling in the hundreds of thousands. I've even seen Dr. Laura T-Shirts.