Sounds like i was one of the few to do the vampire cure potion quest then. Though in the end the extra skills vampirism gives you were outweighed by the negatives for me - only fast travel after 8pm means by the time you get to a shop its closed so you have to find some where inside to wait unitl 9am at which point you have to run through the daylight before you turn into flames.
Admitedly when i get kicked out of the Mages guild I wouldve reloaded to an earlier save if the previous one wasnt hours before hand but at least in looking for 20 redwort and 20 dragons tongue i found loadsa nirnroot.
I definately agree with the 'I'l play the game my own way' - some people dont agree with fast travel but i have exams so i have time to spend 30 minutes trapsing across the land - plus sometimes its like a slide show on horse back - each to their own