They are never gonna change this. And no point in posting it on the forums, because you are only gonna get the "you don't need alts!" "oh you like to roleplay, wrong game" "the story is the game" and whatever all the people who DON'T have another character will say.

I feel you though I have 2 characters at lvl 60 and im soon gonna work on my third one who's still at lvl 50.
Doing the main quest 3 times was like the most boring ive had in a game ever, but I really wanted my 3 characters at vl 50 so I did it anyway