I always play neutral. I like the option of having access to training from the thieves guild. I like the fact that I can crown early if I want. I like that I can get all the quests. I really really like the Ring of Ice (although not sure if lawfuls get this along with the Axe). I like the chance of getting scrolls of chaos removal even though I usually get cheated. I never dig graves unless it's a certain dwarfs. I never pickpocket unless it's to get into a Guild. I never attack monsters that are my friends.
But, I'm a power player through and through. I don't think I've ever really "roll played" adom.
Completed: All Races, All Classes. Twice.
Fastest Run: Dwarf Mindcrafter - 34803 turns. No wand of tele.
Challenge Games: C- CK (stupid ending), Platinum Girdle x10, Westside Story, Team Teleport - illiterate troll barb, Scroll of Omnipotence obtained
ULE - DE Archer