Imagination
Have you ever thought about how much our relationships with other people depend on our imagination? We have conversations in our minds, imagining someone else's responses, and form so much of our opinions of said person, and our feelings towards them, based on things which have never really happened. Imaginary conversations often feel so satisfying; you can say everything you want to without blushing or sstuttering or destroying every known aspect of grammer, and the other participator says exactly what you want them to. It's easy, it's simple, and it makes you feel good. But it's not real. It's hard to say the important things in real life, with a real person standing there. You don't get to make up there responses, or make them ask the questions you need to answer. You will probably make mistakes, and say the wrong thing, and sound like a complete idiot, but at least it's real. And reality brings it's own satisfaction.