That's the point. It seems impractical to other races and while some it is, not all of it is. Let's take friendship for example, to a race of fucked up aliens who murder each other starting at 13 on. Seems impractical, why do it? They're just going to be killing their 'friends' anyways.

To humans who we're all nuts in a way, but not society and instinctively driven to kill each other. Isn't so lame or pointless.