Dreaming is useless

[Carmenll]

'Dreams move the world' people say.
Dreaming is a vital part of being human,however, there is a good and bad side of dreaming.
Dreams are a series of images,ideas, emotions, and sensations occurring involuntarily in the mind during certain stages of sleep.
On one hand,dreamers spend part of their sleep fantasizing an inexistent world, sometimes, they find it difficult to face the real world.
Many of them have problems believing that what they see in dreams does not exist.
They become frustrated.
They are unable to carry on living a normal life.
On the other hand, many inventions came to be because someone dreamed of building them.
Scientists dreamed of devices that helped the development of the world.
Many people keep on living because of their dreams. So at some extent without dreams life would be meaningless.