For me it is rather simple. I knew nothing about D&D prior to starting this game. I played with a friend from work joined a small guild and had a wonderful time. Then the level cap increased from 10. Then new prestige stuff, etc etc. I've got a few characters of different class some pure, some multi, and a ton of bound items across all of them.
I don't have time to re-roll characters to this level. I made mistakes in creation (I'm sure I'm not alone here) and knowing what I do now I would luv to have a way (premium or otherwise) to go back and fix things (ie skill points distro or ability point distro) and keep my current character and all her bound items.
The "why" seems really ridiculous to discuss. The "What" and the "How" are important to me. I "play" this game. I can't go back in real life and fix mistakes (or cast spells for that matter) so having that ability to do that in this game is very appealing to me.
I hope turbine will allow some method of respec. It would keep me and others I know more involved in the game and possibly bring people back that I know left for this very reason.
Krellin
Drow RG
blindfaith
Sarlona