I am a console player, so let me take a crack at answering that question. While I tend to agree that more choice is generally better than less choice, which would support a Borderlands sytle reperking option and is why I don't have a stong preference against being able to reperk, just having the option would change my mindset when playing the game. A similar argumehnt could be made about fast travel. Having a feature in the game that you know is available affects your mindset even if you make a conscious decision not to use it. I never use fast travel but I am always aware it is there and that makes me feel differently when playing Skyrim or Oblivion, which have fast travel than Morrowind where there is no fast travel available. In Morrowing, if you are out in the middle of nowhere without a recall or Almsive Intervention at your disposal, you really feel isolated. Not so much in Skyrim or Oblivion.
Another example. Before taking the 100 sneak perk, my Khajiit used to be quite nervous and apprehensive whenever sneaking up on a boss in a room full of hostiles because one false move and he would be discovered and it would be over for him. With the 100 sneak perk, he can still get the 15x dagger damage bonus even if discovered and now can drop everyone in the room without breaking a sweat. Sure, I can choose not to play that way, but knowing that I can has really changed the way the game feels for me. No longer does my Khajiit feel nervous or apprehensive because with the 100 sneak perk he can one shot kill anything in the game whenever he wants to -- he as tough with a dagger in a stand up fight as any warrior.
I am all for more choice, rather than less, but having a choice like being able to reperk is going to affect the way people feel when they are picking perks. I put a lot of thought into my perk choices and still I am not always happy with the decisions. I wish for instance that I had never taken the 100 sneak perk because it is way overpowered. but if I could reperk, then I would not fret too much about perk choices, which would definately change my mindset when playing the game.

Yes I'm sure that is truely the reason why...