Why Are Dreams Absurd?

Dreams, they are the way of storing memories. I believe. Absurd helps us remember things better.

If our brains have some storage capacity, is it full? Is it full all the time, for all the humans? Regardless of age and health?

What’s the point?

I’m eager to understand that, yet I believe the humanity would get this within hunderds of years, not this century. I won’t survive that long, more likely.