Being able to disable fast travel would help some avoid the temptation of it while attempting the "just don't use it method." Sure, they could go back into options to re-enable it, but that would be an additional step that just might keep them on track. Why is having an option such a problem?
Because we don't see "resist the temptation" to be as difficult a task as some of you do, it seems like.
At any time, I could hit ~ and then type TGM, and I could have
Infinite Power?!11!1!! and slaughter all that is before me (in OB & FO3, at least
). But guess what? I don't. The "temptation" to do something trivially easy, but that I personally feel isn't the way I want to play?
Not a major struggle to resist.
If people truly feel that Fast Travel is such an utter blight upon their gaming experience, I have absolutely no understanding of why it would be at all difficult to
just not use it.