it's nothing that I can really define. I just can't see sleep as a constructive thing, it's more likely stuck in my mind as a situation of wasting/loosing time. I can't go to sleep when I think I still need to do things, because I think I'd loose time, that is needed. And I sometimes just am afraid of things happening to me faster by sleeping the time away, that keeps me away from it. (But mostly it's the loosing time thing).
Dunno... I think there is a connection between the lack of sleep and stress. Just dunno, which way round