It's a matter of personal preference. Many people prefer to learn in a classroom. If e-learning is truly more fun and effective, why would people be spending thousands of dollars to learn in a classroom when they can learn the same things online at a lower cost? That clearly implies that they prefer classroom-learning. A possible reason might be that people enjoy the company of others. Sitting alone in your house with a computer can get boring.
You haven't really posted any arguments. This could have been an interesting debate. If anyone is interested, here's a link to some information about classroom learning (1). Here's one about the benefits of e-learning (2).