Was a personal-rules thread recently, very similar to this. But anyways...
* I save items, because I am a packrat.
* I play only with items my characters have found.(no trading) Partially this is a habit from avoiding all the duped items in the Realms trade pool. But partially it's because I get more enjoyment from using the items I found myself.
* I twink my characters. To me, its the end result of the time spent on previous characters, so I don't see it as unfair or unbalancing.
* I play hardcore, because I want the challange, and I don't want to "zerg" my way past bosses, dying several times in the process. Long ago I was loosing interest in D2 classic because "anyone can beat it if you just plow through and die a zillion times". HC put the danger back into dying for me.
* Even if my characters die, I don't want to loose my items. So I mule my items after death with ATMA (before ATMA, I actually played softcore but did not play my chars after they died, I only kept them to be able to mule their gear off)
* I don't delete my highest level ghost, until a new character passes them. I leave the ghost char on the selection screen as a challange.
* oh, and all my characters of the same type use the same name, with roman numerals. My skelemancer is Leethe_III (Leethe and Leethe_II are dead).
* I don't mind skipping quests, skipping waypoints, or worry about doing full clears. But, as I play single player, I don't get waypoints handed to me, I don't get power-leveled or power-acted.