The fast-travel arguments in this community remind me of the flying arguments in WoW. Honestly, I don't fast-travel that often myself because I do prefer to play in the most immersive way possible, but I have no problem with it, sometimes it's just convenient. Sometimes I simply don't feel like walking to the other end of the province for a small task. It's also pretty great if you end up stuck/lost somewhere and stuff like that.

We obviously know nothing about TESVI as of yet, but I can pretty much assure you they're not going to remove it.

Not to mention, it's not like we don't have options such as carriages or of course horses for those who don't want to fast-travel. Being able to choose is a good thing. Not everyone has the exact same playstyle, and Bethesda are aware of this.