It doesn't seem like a good idea. When you are lonely and sad, conjuring up entities could probably lock-you up in a mental hellish prison of bad thought cycle

It doesn't seem like a good idea. When you are lonely and sad, conjuring up entities could probably lock-you up in a mental hellish prison of bad thought cycles, where lack of imagination feeds into itself. Imagination is a very powerful tool that is very under-utilized in our modern western societies. There would be a lot to gain by teaching the basics, providing some guidance and a safe-environment to let it run. Once you have enough imagination so that your mental world feeds itself plenty of interesting novelties, you probably haven't time to be lonely anymore. Growing an interesting mental world, probably benefits a lot from experiences in the real world from other real people and an escape from reality probably isn't the solution. Specifically confronting reality is a great way to discover holes in your mental models.