I think you are miscoloring the issue. Fast travel is an alternate to normal travel, people are arguing over the form of its implementation. Combat is not an alternative to anything, it is self evident as an addition to the game.
But I would (quite honestly) say that map travel is self evident. :shrug:
When people say they are 'tempted' by Fast Travel what they mean is that they want to have a more 'realistic' travel system (instead of pressing a button and traveling anywhere you want) but since they
are only given the option between an incredibly time consuming method (walking/riding) or an incredibly fast but unrealistic method (time warping, unstructured fast travel) they choose the unrealistic one because even though it hurts their immersion and experience of the game, they don't have all day to sit around and play videogames. Thus they are 'tempted' to use the faster option because the only other choice hinders their ability to play the game in a timely fashion. What people want is a REALISTIC methods of fast travel, including: fast travel spells, tangible transportation (boats, convoys, silt striders), and/or Mage Guild (or their alt) transportation. Not only does this make travel a PART of the game rather than a feature in the menus but it requires thought on how you're going to get from place to place.
I don't see this in the game; Time passes with
fast foot travel. I don't understand how its not viewed as realistic.
I am not one to consider the presence of fantasy aspects in a game to be an open flood gate for 'anything goes', I can accept fantasy elements as realistic within context; but for sake of example...
You have Mage teleportation, providing instant travel to 50 miles away (lets say he'd do it for you for free). You also have Map travel to the same location. Now, in this example I will consider teleportation as unrealistic because its not real... while considering map travel as completely realistic because its my character out for a walk.
In both instance, use of travel results in the screen fading to black, and then fading back into view in the new location. I see posts by players that call this unrealistic in the case of using map travel, and I don't understand it. Would anyone care to explain this in excruciating detail?
**EDIT: I do consider Fast Travel to be broken though, as in TES&FO3 you cannot be ambushed, and you can exploit the process. However this does not affect realism for me. Its a mechanics flaw.