No point going rogue ever

So to prove a point, I went rogue and killed someone who looted my corpse, died again about 60s later, but whatever i killed the dude who looted my corpse.... However seriously I'm a DZ level 40 and when I died I lost 20k experience. WTH..... 20k.... There is seriously no point in going rogue with punishments like that... So is there some point of this that im missing???